Journal of Optics - IOPscience

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class="metrics__view-more" href="https://iopscience.iop.org/journal/2040-8986/page/about-the-journal#metrics">Full list of journal metrics</a> </div>  <div class="cf mb-1">    <div class="tabs cf mb-2 mt-1 tabs--vertical" id="wd-jnl-hm-art-list">  <div role="tablist"> <button role="tab" aria-selected="false" aria-controls="most-read-tab" id="most-read" class="event_tabs" tabindex="-1"> Most read </button> <button role="tab" aria-selected="true" aria-controls="latest-articles-tab" id="latest-articles" class="event_tabs"> Latest articles </button> <button role="tab" aria-selected="false" aria-controls="review-articles-tab" id="review-articles" class="event_tabs" tabindex="-1"> Review articles </button> <button role="tab" aria-selected="false" aria-controls="accepted-manuscripts-tab" id="accepted-manuscripts" class="event_tabs" tabindex="-1"> Accepted manuscripts </button> <button role="tab" aria-selected="false" aria-controls="open-access-articles-tab" id="open-access-articles" class="event_tabs" tabindex="-1"> Open Access </button> </div>   <div tabindex="0" role="tabpanel" id="most-read-tab" aria-labelledby="most-read" hidden="hidden"> <div class=" reveal-container reveal-closed reveal-enabled reveal-container--jnl-tab"> <h2 class="tabpanel__title"> <button type="button" class="reveal-trigger event_tabs-accordion" aria-expanded="false"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg>Most read</button> </h2> <div class="reveal-content tabpanel__content" style="display: none"> <p> <button data-reveal-label-alt="Close all abstracts" class="reveal-all-trigger mr-2 small" data-reveal-text="Open all abstracts" data-link-purpose-append="in this tab" data-link-purpose-append-open="in this tab"> Open all abstracts<span class="offscreen-hidden">, in this tab</span> </button> </p>  <div class="art-list"> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ac9e08" class="art-list-item-title event_main-link">Zernike polynomials and their applications</a> <p class="small art-list-item-meta"> Kuo Niu and Chao Tian 2022 <em>J. Opt.</em> <b>24</b> 123001 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Zernike polynomials and their applications" data-link-purpose-append-open="Zernike polynomials and their applications">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ac9e08/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Zernike polynomials and their applications</span></a> <a href="/article/10.1088/2040-8986/ac9e08/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Zernike polynomials and their applications</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>The Zernike polynomials are a complete set of continuous functions orthogonal over a unit circle. Since first developed by Zernike in 1934, they have been in widespread use in many fields ranging from optics, vision sciences, to image processing. However, due to the lack of a unified definition, many confusing indices have been used in the past decades and mathematical properties are scattered in the literature. This review provides a comprehensive account of Zernike circle polynomials and their noncircular derivatives, including history, definitions, mathematical properties, roles in wavefront fitting, relationships with optical aberrations, and connections with other polynomials. We also survey state-of-the-art applications of Zernike polynomials in a range of fields, including the diffraction theory of aberrations, optical design, optical testing, ophthalmic optics, adaptive optics, and image analysis. Owing to their elegant and rigorous mathematical properties, the range of scientific and industrial applications of Zernike polynomials is likely to expand. This review is expected to clear up the confusion of different indices, provide a self-contained reference guide for beginners as well as specialists, and facilitate further developments and applications of the Zernike polynomials.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ac9e08">https://doi.org/10.1088/2040-8986/ac9e08</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad261f" class="art-list-item-title event_main-link">Roadmap on optical communications</a> <p class="small art-list-item-meta"> Erik Agrell <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 093001 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Roadmap on optical communications" data-link-purpose-append-open="Roadmap on optical communications">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad261f/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Roadmap on optical communications</span></a> <a href="/article/10.1088/2040-8986/ad261f/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Roadmap on optical communications</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>The Covid-19 pandemic showed forcefully the fundamental importance broadband data communication and the internet has in our society. Optical communications forms the undisputable backbone of this critical infrastructure, and it is supported by an interdisciplinary research community striving to improve and develop it further. Since the first 'Roadmap of optical communications' was published in 2016, the field has seen significant progress in all areas, and time is ripe for an update of the research status. The optical communications area has become increasingly diverse, covering research in fundamental physics and materials science, high-speed electronics and photonics, signal processing and coding, and communication systems and networks. This roadmap describes state-of-the-art and future outlooks in the optical communications field. The article is divided into 20 sections on selected areas, each written by a leading expert in that area. The sections are thematically grouped into four parts with 4–6 sections each, covering, respectively, hardware, algorithms, networks and systems. Each section describes the current status, the future challenges, and development needed to meet said challenges in their area. As a whole, this roadmap provides a comprehensive and unprecedented overview of the contemporary optical communications research, and should be essential reading for researchers at any level active in this field.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad261f">https://doi.org/10.1088/2040-8986/ad261f</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/aac68d" class="art-list-item-title event_main-link">Biomedical application of optical fibre sensors</a> <p class="small art-list-item-meta"> R Correia <em>et al</em> 2018 <em>J. Opt.</em> <b>20</b> 073003 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Biomedical application of optical fibre sensors" data-link-purpose-append-open="Biomedical application of optical fibre sensors">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/aac68d/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Biomedical application of optical fibre sensors</span></a> <a href="/article/10.1088/2040-8986/aac68d/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Biomedical application of optical fibre sensors</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Optical fibre sensors (OFS), as a result of their unique properties such as small size, no interference with electromagnetic radiation, high sensitivity and the ability to design multiplexed or distributed sensing systems, have found applications ranging from structural health monitoring to biomedical and point of care instrumentation. While the former represents the main commercial application for OFS, there is body of literature concerning the deployment of this versatile sensing platform in healthcare. This paper reviews the different types of OFS and their most recent applications in healthcare. It aims to help clinicians to better understand OFS technology and also provides an overview of the challenges involved in the deployment of developed technology in healthcare. Examples of the application of OFS in healthcare are discussed with particular emphasis on recently (2015–2017) published works to avoid replicating recent review papers. The majority of the work on the development of biomedical OFS stops at the laboratory stage and, with a few exceptions, is not explored in healthcare settings. OFSs have yet to fulfil their great potential in healthcare and methods of increasing the adoption of medical devices based on optical fibres are discussed. It is important to consider these factors early in the device development process for successful translation of the developed sensors to healthcare practice.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/aac68d">https://doi.org/10.1088/2040-8986/aac68d</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ace4dc" class="art-list-item-title event_main-link">Roadmap on spatiotemporal light fields</a> <p class="small art-list-item-meta"> Yijie Shen <em>et al</em> 2023 <em>J. Opt.</em> <b>25</b> 093001 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Roadmap on spatiotemporal light fields" data-link-purpose-append-open="Roadmap on spatiotemporal light fields">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ace4dc/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Roadmap on spatiotemporal light fields</span></a> <a href="/article/10.1088/2040-8986/ace4dc/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Roadmap on spatiotemporal light fields</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Spatiotemporal sculpturing of light pulse with ultimately sophisticated structures represents a major goal of the everlasting pursue of ultra-fast information transmission and processing as well as ultra-intense energy concentration and extraction. It also holds the key to unlock new extraordinary fundamental physical effects. Traditionally, spatiotemporal light pulses are always treated as spatiotemporally separable wave packet as solution of the Maxwell's equations. In the past decade, however, more generalized forms of spatiotemporally nonseparable solution started to emerge with growing importance for their striking physical effects. This roadmap intends to highlight the recent advances in the creation and control of increasingly complex spatiotemporally sculptured pulses, from spatiotemporally separable to complex nonseparable states, with diverse geometric and topological structures, presenting a bird's eye viewpoint on the zoology of spatiotemporal light fields and the outlook of future trends and open challenges.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ace4dc">https://doi.org/10.1088/2040-8986/ace4dc</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ab161d" class="art-list-item-title event_main-link">Roadmap on metasurfaces</a> <p class="small art-list-item-meta"> Oscar Quevedo-Teruel <em>et al</em> 2019 <em>J. Opt.</em> <b>21</b> 073002 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Roadmap on metasurfaces" data-link-purpose-append-open="Roadmap on metasurfaces">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ab161d/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Roadmap on metasurfaces</span></a> <a href="/article/10.1088/2040-8986/ab161d/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Roadmap on metasurfaces</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Metasurfaces are thin two-dimensional metamaterial layers that allow or inhibit the propagation of electromagnetic waves in desired directions. For example, metasurfaces have been demonstrated to produce unusual scattering properties of incident plane waves or to guide and modulate surface waves to obtain desired radiation properties. These properties have been employed, for example, to create innovative wireless receivers and transmitters. In addition, metasurfaces have recently been proposed to confine electromagnetic waves, thereby avoiding undesired leakage of energy and increasing the overall efficiency of electromagnetic instruments and devices. The main advantages of metasurfaces with respect to the existing conventional technology include their low cost, low level of absorption in comparison with bulky metamaterials, and easy integration due to their thin profile. Due to these advantages, they are promising candidates for real-world solutions to overcome the challenges posed by the next generation of transmitters and receivers of future high-rate communication systems that require highly precise and efficient antennas, sensors, active components, filters, and integrated technologies. This Roadmap is aimed at binding together the experiences of prominent researchers in the field of metasurfaces, from which explanations for the physics behind the extraordinary properties of these structures shall be provided from viewpoints of diverse theoretical backgrounds. Other goals of this endeavour are to underline the advantages and limitations of metasurfaces, as well as to lay out guidelines for their use in present and future electromagnetic devices.</p><p>This Roadmap is divided into five sections:</p><p>1. <b>Metasurface based antennas.</b> In the last few years, metasurfaces have shown possibilities for advanced manipulations of electromagnetic waves, opening new frontiers in the design of antennas. In this section, the authors explain how metasurfaces can be employed to tailor the radiation properties of antennas, their remarkable advantages in comparison with conventional antennas, and the future challenges to be solved.</p><p>2. <b>Optical metasurfaces.</b> Although many of the present demonstrators operate in the microwave regime, due either to the reduced cost of manufacturing and testing or to satisfy the interest of the communications or aerospace industries, part of the potential use of metasurfaces is found in the optical regime. In this section, the authors summarize the classical applications and explain new possibilities for optical metasurfaces, such as the generation of superoscillatory fields and energy harvesters.</p><p>3. <b>Reconfigurable and active metasurfaces.</b> Dynamic metasurfaces are promising new platforms for 5G communications, remote sensing and radar applications. By the insertion of active elements, metasurfaces can break the fundamental limitations of passive and static systems. In this section, we have contributions that describe the challenges and potential uses of active components in metasurfaces, including new studies on non-Foster, parity-time symmetric, and non-reciprocal metasurfaces.</p><p>4. <b>Metasurfaces with higher symmetries.</b> Recent studies have demonstrated that the properties of metasurfaces are influenced by the symmetries of their constituent elements. Therefore, by controlling the properties of these constitutive elements and their arrangement, one can control the way in which the waves interact with the metasurface. In this section, the authors analyze the possibilities of combining more than one layer of metasurface, creating a higher symmetry, increasing the operational bandwidth of flat lenses, or producing cost-effective electromagnetic bandgaps.</p><p>5. <b>Numerical and analytical modelling of metasurfaces.</b> In most occasions, metasurfaces are electrically large objects, which cannot be simulated with conventional software. Modelling tools that allow the engineering of the metasurface properties to get the desired response are essential in the design of practical electromagnetic devices. This section includes the recent advances and future challenges in three groups of techniques that are broadly used to analyze and synthesize metasurfaces: circuit models, analytical solutions and computational methods.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ab161d">https://doi.org/10.1088/2040-8986/ab161d</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8978/18/6/063002" class="art-list-item-title event_main-link">Roadmap of optical communications</a> <p class="small art-list-item-meta"> Erik Agrell <em>et al</em> 2016 <em>J. Opt.</em> <b>18</b> 063002 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Roadmap of optical communications" data-link-purpose-append-open="Roadmap of optical communications">Open abstract</span> </button> <a href="/article/10.1088/2040-8978/18/6/063002/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Roadmap of optical communications</span></a> <a href="/article/10.1088/2040-8978/18/6/063002/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Roadmap of optical communications</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Lightwave communications is a necessity for the information age. Optical links provide enormous bandwidth, and the optical fiber is the only medium that can meet the modern society's needs for transporting massive amounts of data over long distances. Applications range from global high-capacity networks, which constitute the backbone of the internet, to the massively parallel interconnects that provide data connectivity inside datacenters and supercomputers. Optical communications is a diverse and rapidly changing field, where experts in photonics, communications, electronics, and signal processing work side by side to meet the ever-increasing demands for higher capacity, lower cost, and lower energy consumption, while adapting the system design to novel services and technologies. Due to the interdisciplinary nature of this rich research field, <i>Journal of Optics</i> has invited 16 researchers, each a world-leading expert in their respective subfields, to contribute a section to this invited review article, summarizing their views on state-of-the-art and future developments in optical communications.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8978/18/6/063002">https://doi.org/10.1088/2040-8978/18/6/063002</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/aac4c4" class="art-list-item-title event_main-link">Semiconductor quantum dots as an ideal source of polarization-entangled photon pairs on-demand: a review</a> <p class="small art-list-item-meta"> Daniel Huber <em>et al</em> 2018 <em>J. Opt.</em> <b>20</b> 073002 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Semiconductor quantum dots as an ideal source of polarization-entangled photon pairs on-demand: a review" data-link-purpose-append-open="Semiconductor quantum dots as an ideal source of polarization-entangled photon pairs on-demand: a review">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/aac4c4/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Semiconductor quantum dots as an ideal source of polarization-entangled photon pairs on-demand: a review</span></a> <a href="/article/10.1088/2040-8986/aac4c4/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Semiconductor quantum dots as an ideal source of polarization-entangled photon pairs on-demand: a review</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>More than 80 years have passed since the first publication on entangled quantum states. Over this period, the concept of spookily interacting quantum states became an emerging field of science. After various experiments proving the existence of such non-classical states, visionary ideas were put forward to exploit entanglement in quantum information science and technology. These novel concepts have not yet come out of the experimental stage, mostly because of the lack of suitable, deterministic sources of entangled quantum states. Among many systems under investigation, semiconductor quantum dots are particularly appealing emitters of on-demand, single polarization-entangled photon pairs. While it was originally believed that quantum dots must exhibit a limited degree of entanglement related to decoherence effects typical of the solid-state, recent studies have invalidated this preconception. We review the relevant experiments which have led to these important discoveries and discuss the remaining challenges for the anticipated quantum technologies.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/aac4c4">https://doi.org/10.1088/2040-8986/aac4c4</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/aad271" class="art-list-item-title event_main-link">Recent advances in radiation-hardened fiber-based technologies for space applications</a> <p class="small art-list-item-meta"> Sylvain Girard <em>et al</em> 2018 <em>J. Opt.</em> <b>20</b> 093001 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Recent advances in radiation-hardened fiber-based technologies for space applications" data-link-purpose-append-open="Recent advances in radiation-hardened fiber-based technologies for space applications">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/aad271/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Recent advances in radiation-hardened fiber-based technologies for space applications</span></a> <a href="/article/10.1088/2040-8986/aad271/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Recent advances in radiation-hardened fiber-based technologies for space applications</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>In this topical review, the recent progress on radiation-hardened fiber-based technologies is detailed, focusing on examples for space applications. In the first part of the review, we introduce the operational principles of the various fiber-based technologies considered for use in radiation environments: passive optical fibers for data links, diagnostics, active optical fibers for amplifiers and laser sources as well as the different classes of point and distributed fiber sensors: gyroscopes, Bragg gratings, Rayleigh, Raman or Brillouin-based distributed sensors. Second, we describe the state of the art regarding our knowledge of radiation effects on the performance of these devices, from the microscopic effects observed in the amorphous silica glass used to design fiber cores and cladding, to the macroscopic response of fiber-based devices and systems. Third, we present the recent advances regarding the hardening (improvement of the radiation tolerance) of these technologies acting on the material, device or system levels. From the review, the potential of fiber-based technologies for operation in radiation environments is demonstrated and the future challenges to be overcome in the coming years are presented.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/aad271">https://doi.org/10.1088/2040-8986/aad271</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ac56b6" class="art-list-item-title event_main-link">Mid-wave and long-wave infrared transmitters and detectors for optical satellite communications—a review</a> <p class="small art-list-item-meta"> Liam Flannigan <em>et al</em> 2022 <em>J. Opt.</em> <b>24</b> 043002 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Mid-wave and long-wave infrared transmitters and detectors for optical satellite communications—a review" data-link-purpose-append-open="Mid-wave and long-wave infrared transmitters and detectors for optical satellite communications—a review">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ac56b6/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Mid-wave and long-wave infrared transmitters and detectors for optical satellite communications—a review</span></a> <a href="/article/10.1088/2040-8986/ac56b6/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Mid-wave and long-wave infrared transmitters and detectors for optical satellite communications—a review</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>There has been a recent surge in interest for optical satellite communication (SatCom) utilizing lasers. It is clear to see why, as optical SatCom is capable of higher speed, lighter weight, higher directionality, and higher efficiency versus their radio-based counterparts. Research into optical SatCom has focused on devices operating in the short-wave infrared (SWIR), which is due to the maturity and commercial availability of such component's thanks to significant development in terrestrial telecommunications networks. However, SWIR performs poorly in fog and heavy weather, prompting investigations into longer mid-wave and long-wave infrared bands for optical communication instead due to reduced atmospheric losses. This paper provides a comprehensive review of laser transmitters, detectors, and the science behind selecting longer wavelengths for optical SatCom to boost optical SatCom between ground stations and low earth orbit satellite constellations being deployed.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ac56b6">https://doi.org/10.1088/2040-8986/ac56b6</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8978/18/10/103501" class="art-list-item-title event_main-link">Design criteria for ultrafast optical parametric amplifiers</a> <p class="small art-list-item-meta"> C Manzoni and G Cerullo 2016 <em>J. Opt.</em> <b>18</b> 103501 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Design criteria for ultrafast optical parametric amplifiers" data-link-purpose-append-open="Design criteria for ultrafast optical parametric amplifiers">Open abstract</span> </button> <a href="/article/10.1088/2040-8978/18/10/103501/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Design criteria for ultrafast optical parametric amplifiers</span></a> <a href="/article/10.1088/2040-8978/18/10/103501/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Design criteria for ultrafast optical parametric amplifiers</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Optical parametric amplifiers (OPAs) exploit second-order nonlinearity to transfer energy from a fixed frequency pump pulse to a variable frequency signal pulse, and represent an easy way of tuning over a broad range the frequency of an otherwise fixed femtosecond laser system. OPAs can also act as broadband amplifiers, transferring energy from a narrowband pump to a broadband signal and thus considerably shortening the duration of the pump pulse. Due to these unique properties, OPAs are nowadays ubiquitous in ultrafast laser laboratories, and are employed by many users, such as solid state physicists, atomic/molecular physicists, chemists and biologists, who are not experts in ultrafast optics. This tutorial paper aims at providing the non-specialist reader with a self-consistent guide to the physical foundations of OPAs, deriving the main equations describing their performance and discussing how they can be used to understand their most important working parameters (frequency tunability, bandwidth, pulse energy/repetition rate scalability, control over the carrier-envelope phase of the generated pulses). Based on this analysis, we derive practical design criteria for OPAs, showing how their performance depends on the type of the nonlinear interaction (crystal type, phase-matching configuration, crystal length), on the characteristics of the pump pulse (frequency, duration, energy, repetition rate) and on the OPA architecture.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8978/18/10/103501">https://doi.org/10.1088/2040-8978/18/10/103501</a> </div> </div> </div> </div> </div>  </div> </div> </div>   <div tabindex="0" role="tabpanel" id="latest-articles-tab" aria-labelledby="latest-articles"> <div class=" reveal-container reveal-closed reveal-enabled reveal-container--jnl-tab"> <h2 class="tabpanel__title"> <button type="button" class="reveal-trigger event_tabs-accordion" aria-expanded="false"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg>Latest articles</button> </h2> <div class="reveal-content tabpanel__content" style="display: none"> <p> <button data-reveal-label-alt="Close all abstracts" class="reveal-all-trigger mr-2 small" data-reveal-text="Open all abstracts" data-link-purpose-append="in this tab" data-link-purpose-append-open="in this tab"> Open all abstracts<span class="offscreen-hidden">, in this tab</span> </button> </p>  <div class="art-list"> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad9289" class="art-list-item-title event_main-link">Explosive gas sensor based on photonic crystal fiber</a> <p class="small art-list-item-meta"> Jianchun Yang <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 125606 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Explosive gas sensor based on photonic crystal fiber" data-link-purpose-append-open="Explosive gas sensor based on photonic crystal fiber">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9289/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Explosive gas sensor based on photonic crystal fiber</span></a> <a href="/article/10.1088/2040-8986/ad9289/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Explosive gas sensor based on photonic crystal fiber</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>A Mach–Zehnder interferometer gas sensor, in which the photonic crystal fiber (PCF) is coated with an allyl tetraphenylethylene (AL-TPE) film, is proposed. By fusing single-mode fibers to both ends of a PCF coated with an AL-TPE film, a core-mismatch sensor for explosive trinitrotoluene (TNT) detection is formed. The relationship between the effective refractive index of the cladding mode and the refractive index of the sensitive film was simulated by the finite element method. The results indicate that as the refractive index of the sensitive film increases from 1.440 to 1.450, the interference fringes appear blue shift. The correlation coefficient is 0.998 and the sensitivity is 221 nm RIU<sup>−1</sup>. The experimental study investigated the interferometric spectra of PCF within the range of 10–40 mm interaction lengths. It was found that with longer interaction lengths, the trough shapes became sharper and wavelength shifts became more pronounced. In the case of a 30 mm interaction length PCF sensor, its linearity <i>R</i><sup>2</sup> = 0.9804, with a sensitivity of 172.67 pm ppb<sup>−1</sup> for TNT vapor. The sensor showed good selectivity when tested on non-explosive gases.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9289">https://doi.org/10.1088/2040-8986/ad9289</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad8c5e" class="art-list-item-title event_main-link">Wigner function and intensity moments of spatio-temporal light fields</a> <p class="small art-list-item-meta"> A Bekshaev <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 125605 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Wigner function and intensity moments of spatio-temporal light fields" data-link-purpose-append-open="Wigner function and intensity moments of spatio-temporal light fields">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8c5e/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Wigner function and intensity moments of spatio-temporal light fields</span></a> <a href="/article/10.1088/2040-8986/ad8c5e/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Wigner function and intensity moments of spatio-temporal light fields</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>The Wigner distribution function and its spatial-angular moments (intensity moments) are known to be efficient instruments for the characterization of complex quasimonochromatic light beams and their transformations. In this paper, a generalization of the Wigner function (WF)-based approach to spatio-temporal (ST) light fields (wave packets, short pulses) is considered. The ST intensity moments are related to important characteristics of the wave-packet structure, especially, with the transverse orbital angular momentum (OAM) being a specific feature of the ST optical vortices (STOVs). The ST moments' transformations in a paraxial optical system obey simple and unified rules involving the ray-transfer <i>ABCD</i>-matrix of the system. On this basis, and with simple examples of OAM-carrying optical pulses, the schemes and mechanisms of STOV generation and transformation are presented. Examples of nonvortex ST wave packets with transverse OAM, their possible realizations, and the relations between the OAM and the visible pulse rotations are also discussed. The regular and unified formalism, developed in this paper, can be generalized and applied to more complex situations where the ST field propagates through inhomogeneous and random (scattering) media.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8c5e">https://doi.org/10.1088/2040-8986/ad8c5e</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad8c5d" class="art-list-item-title event_main-link">Circularly polarized twin port tunable silicon-graphene antenna with beam tilting characteristics for THz based 6G communication system</a> <p class="small art-list-item-meta"> Nilesh Kumar and Arvind Kumar 2024 <em>J. Opt.</em> <b>26</b> 125704 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Circularly polarized twin port tunable silicon-graphene antenna with beam tilting characteristics for THz based 6G communication system" data-link-purpose-append-open="Circularly polarized twin port tunable silicon-graphene antenna with beam tilting characteristics for THz based 6G communication system">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8c5d/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Circularly polarized twin port tunable silicon-graphene antenna with beam tilting characteristics for THz based 6G communication system</span></a> <a href="/article/10.1088/2040-8986/ad8c5d/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Circularly polarized twin port tunable silicon-graphene antenna with beam tilting characteristics for THz based 6G communication system</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>This communication explains the design and analyse of a twin port silicon-graphene aerial. The intended aerial has three distinct features: (i) stimulation of ceramics through uneven cross slot produces the circularly polarised waves from 3.45 THz to 3.65 THz; (ii) a mirror arrangement of uneven cross-shaped slot increases separation between ports by almost 25 dB; and (iii) suspension of partial reflecting surface over twin port antenna slants the radiation pattern by ±45°. A sheet of graphene over silicon creates the tunablity in terms of working band and circularly polarized band by altering its chemical potential. The optimized result from HFSS is compared to the CST EM tool, and it is determined that the suggested aerial functions well in the 3.25–3.75 THz range with a peak gain of 3.5 dBi. By including pattern diversity characteristics, the suggested antenna's multi-port parameters are improved, and it becomes suitable for THz-built 6 G wireless applications.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8c5d">https://doi.org/10.1088/2040-8986/ad8c5d</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad8f42" class="art-list-item-title event_main-link">Detection of hidden drawings using multi-wavelength dynamic speckle, tuneable algorithms, and unsupervised learning</a> <p class="small art-list-item-meta"> Leandro Buffarini <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 125703 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Detection of hidden drawings using multi-wavelength dynamic speckle, tuneable algorithms, and unsupervised learning" data-link-purpose-append-open="Detection of hidden drawings using multi-wavelength dynamic speckle, tuneable algorithms, and unsupervised learning">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8f42/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Detection of hidden drawings using multi-wavelength dynamic speckle, tuneable algorithms, and unsupervised learning</span></a> <a href="/article/10.1088/2040-8986/ad8f42/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Detection of hidden drawings using multi-wavelength dynamic speckle, tuneable algorithms, and unsupervised learning</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>We implemented an experiment to reveal hidden drawings on papyrus, utilizing an optical technique based on the speckle phenomenon. The goal is to optimize the detection of hidden objects. Our approach proposes using multiple wavelengths for illumination and tuneable algorithms to process the dynamic speckle images. By implementing the suggested method, we generated various results with varying quality, contingent upon the tuneable algorithm parameters. It is feasible to identify the optimal parameter combination to achieve the most effective visualization of the recovered image. To streamline the selection of tuneable algorithms and mitigate reliance on subjective visual judgment, we employed unsupervised machine learning techniques to determine the conditions necessary to achieve optimal results. This approach simplifies the selection procedure and offers an objective and non-invasive method. Furthermore, the proposed procedure holds promise for extending its application to uncover hidden paintings, subsurface archaeological artefacts, and other dynamic speckle experiments.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8f42">https://doi.org/10.1088/2040-8986/ad8f42</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad8c58" class="art-list-item-title event_main-link">On the suitability of rigorous coupled-wave analysis for fast optical force simulations</a> <p class="small art-list-item-meta"> Bo Gao <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 125104 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="On the suitability of rigorous coupled-wave analysis for fast optical force simulations" data-link-purpose-append-open="On the suitability of rigorous coupled-wave analysis for fast optical force simulations">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8c58/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, On the suitability of rigorous coupled-wave analysis for fast optical force simulations</span></a> <a href="/article/10.1088/2040-8986/ad8c58/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, On the suitability of rigorous coupled-wave analysis for fast optical force simulations</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Optical force responses underpin nanophotonic actuator design, which requires a large number of force simulations to optimize structures. Commonly used computation methods, such as the finite-difference time-domain method, and finite element methods, are resource intensive and require large amounts of calculation time when multiple structures need to be compared during optimization. This research demonstrates that performing optical force calculations on 2D-periodic structures using the rigorous coupled-wave analysis method is typically on the order of 10 times faster than other approaches and with sufficient accuracy to suit optical design purposes. Moreover, this speed increase is available on consumer grade laptops, avoiding the need for a high performance computing resource.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8c58">https://doi.org/10.1088/2040-8986/ad8c58</a> </div> </div> </div> </div> </div>  </div> </div> </div>     <div tabindex="0" role="tabpanel" id="review-articles-tab" aria-labelledby="review-articles" hidden="hidden"> <div class=" reveal-container reveal-closed reveal-enabled reveal-container--jnl-tab"> <h2 class="tabpanel__title"> <button type="button" class="reveal-trigger event_tabs-accordion" aria-expanded="false"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg>Review articles</button> </h2> <div class="reveal-content tabpanel__content" style="display: none"> <p> <button data-reveal-label-alt="Close all abstracts" class="reveal-all-trigger mr-2 small" data-reveal-text="Open all abstracts" data-link-purpose-append="in this tab" data-link-purpose-append-open="in this tab"> Open all abstracts<span class="offscreen-hidden">, in this tab</span> </button> </p>  <div class="art-list"> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad8147" class="art-list-item-title event_main-link">Ghost imaging Lidar: principle, progress and prospect</a> <p class="small art-list-item-meta"> Wenlin Gong and Shensheng Han 2024 <em>J. Opt.</em> <b>26</b> 123001 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Ghost imaging Lidar: principle, progress and prospect" data-link-purpose-append-open="Ghost imaging Lidar: principle, progress and prospect">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8147/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Ghost imaging Lidar: principle, progress and prospect</span></a> <a href="/article/10.1088/2040-8986/ad8147/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Ghost imaging Lidar: principle, progress and prospect</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Ghost imaging (GI), as a computational imaging technology, can staringly obtain the target's image by computing the second-order correlation function between the intensity of modulation field and the target's echo signal recorded by a single-pixel detector. Since GI with classical light source was experimentally demonstrated, GI Lidar has been considered to be one of the best application prospects in GI direction and become a research hotspot. With in-depth study and development of GI Lidar in recent years, GI Lidar has achieved significant progress and is expected to be applied in the near future. In this paper, we try to sketch the basic principles and superiorities of two kinds of GI Lidar. Next, with respect to the application of long-range, high-resolution, and high-speed moving target detection and recognition, we introduce the development progress of narrow-pulsed GI Lidar and long-pulsed GI Lidar via heterodyne detection. Finally, the key problems and prospect of GI Lidar are also discussed.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8147">https://doi.org/10.1088/2040-8986/ad8147</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad261f" class="art-list-item-title event_main-link">Roadmap on optical communications</a> <p class="small art-list-item-meta"> Erik Agrell <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 093001 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Roadmap on optical communications" data-link-purpose-append-open="Roadmap on optical communications">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad261f/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Roadmap on optical communications</span></a> <a href="/article/10.1088/2040-8986/ad261f/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Roadmap on optical communications</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>The Covid-19 pandemic showed forcefully the fundamental importance broadband data communication and the internet has in our society. Optical communications forms the undisputable backbone of this critical infrastructure, and it is supported by an interdisciplinary research community striving to improve and develop it further. Since the first 'Roadmap of optical communications' was published in 2016, the field has seen significant progress in all areas, and time is ripe for an update of the research status. The optical communications area has become increasingly diverse, covering research in fundamental physics and materials science, high-speed electronics and photonics, signal processing and coding, and communication systems and networks. This roadmap describes state-of-the-art and future outlooks in the optical communications field. The article is divided into 20 sections on selected areas, each written by a leading expert in that area. The sections are thematically grouped into four parts with 4–6 sections each, covering, respectively, hardware, algorithms, networks and systems. Each section describes the current status, the future challenges, and development needed to meet said challenges in their area. As a whole, this roadmap provides a comprehensive and unprecedented overview of the contemporary optical communications research, and should be essential reading for researchers at any level active in this field.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad261f">https://doi.org/10.1088/2040-8986/ad261f</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad5dcc" class="art-list-item-title event_main-link">Towards subwavelength pixels: nanophotonic color routers for ultra-compact high-efficiency CMOS image sensors</a> <p class="small art-list-item-meta"> Chanhyung Park <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 093002 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Towards subwavelength pixels: nanophotonic color routers for ultra-compact high-efficiency CMOS image sensors" data-link-purpose-append-open="Towards subwavelength pixels: nanophotonic color routers for ultra-compact high-efficiency CMOS image sensors">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad5dcc/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Towards subwavelength pixels: nanophotonic color routers for ultra-compact high-efficiency CMOS image sensors</span></a> <a href="/article/10.1088/2040-8986/ad5dcc/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Towards subwavelength pixels: nanophotonic color routers for ultra-compact high-efficiency CMOS image sensors</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>The proliferation of smartphones and the widespread use of camera modules necessitate complementary metal-oxide-semiconductor (CMOS) image sensors with high pixel density. The recent competitive race to miniaturize pixels has enabled commercial CMOS sensors with submicron pixels to reach sizes as small as 0.5 <i>μ</i>m. However, further downsizing towards subwavelength pixels faces fundamental challenges as the conventional focus-and-filter approach suffers from the diminishing focusing ability of conventional microlens arrays and optical efficiency constraints imposed by absorptive color filters. Nanophotonic color routers have emerged to overcome these challenges via efficient spatio-spectral splitting, thereby directing incident light into corresponding pixels. In particular, recent developments in free-form device optimization methods enable the design of highly efficient color routers by exploring a large combinatorial design space, which was previously considered to be intractable with conventional design methods. In this review, we comprehensively introduce a multitude of research achievements in the field of nanophotonic color routers for CMOS image sensors with a special emphasis on their design methodologies.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad5dcc">https://doi.org/10.1088/2040-8986/ad5dcc</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad5d02" class="art-list-item-title event_main-link">Optothermal generation, steady-state trapping, and 3D manipulation of bubbles: an experimental and theoretical analysis of the Marangoni effect</a> <p class="small art-list-item-meta"> Julio Aurelio Sarabia-Alonso and Rubén Ramos-García 2024 <em>J. Opt.</em> <b>26</b> 083501 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Optothermal generation, steady-state trapping, and 3D manipulation of bubbles: an experimental and theoretical analysis of the Marangoni effect" data-link-purpose-append-open="Optothermal generation, steady-state trapping, and 3D manipulation of bubbles: an experimental and theoretical analysis of the Marangoni effect">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad5d02/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Optothermal generation, steady-state trapping, and 3D manipulation of bubbles: an experimental and theoretical analysis of the Marangoni effect</span></a> <a href="/article/10.1088/2040-8986/ad5d02/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Optothermal generation, steady-state trapping, and 3D manipulation of bubbles: an experimental and theoretical analysis of the Marangoni effect</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Since Nobel Laureate Arthur Ashkin first introduced the trapping and manipulation of microparticles using light, numerous studies have explored this technique not only for dielectric/metallic particles but also for organic matter. This advancement has significantly expanded the landscape of non-contact and non-invasive micromanipulation at the nanometric scale. However, micromanipulation of particles with a refractive index smaller than the host medium, <i>n</i><sub>p</sub><i>< n</i><sub>m</sub>, proves challenging with Gaussian beams. To overcome this obstacle, a force known as thermocapillary, or the Marangoni force, has emerged as a straightforward trapping mechanism for bubbles in liquids. The Marangoni force results from the surface tension of bubbles, induced either thermally or chemically—by creating a temperature gradient or adding surfactants, respectively. The surface tension gradient on the liquid host induces tangential stress on the bubble wall, causing the bubble to move toward the region of lower surface tension, where it faces less opposing force. When the Marangoni force is generated by a laser beam's temperature gradient, it becomes an exceptionally effective mechanism for the steady-state trapping and three-dimensional manipulation of bubbles, even with low optical power lasers. This force produces both longitudinal and transversal forces, resembling optical forces, creating a three-dimensional potential well capable of handling bubbles with radii of tens to hundreds of microns. This work provides guidance and demonstrates, both experimentally and theoretically, the step-by-step process of quasi-steady-state trapping and three-dimensional manipulation of bubbles through optothermal effects. The bubbles in question are tens of microns in size, significantly larger than those that optical tweezers can trap/manipulate. Furthermore, the study emphasizes the crucial role of the Marangoni force in this process, outlining its various advantages.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad5d02">https://doi.org/10.1088/2040-8986/ad5d02</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad44aa" class="art-list-item-title event_main-link">Optical trimer: a theoretical physics approach to waveguide couplers</a> <p class="small art-list-item-meta"> A Stoffel <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 073501 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Optical trimer: a theoretical physics approach to waveguide couplers" data-link-purpose-append-open="Optical trimer: a theoretical physics approach to waveguide couplers">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad44aa/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Optical trimer: a theoretical physics approach to waveguide couplers</span></a> <a href="/article/10.1088/2040-8986/ad44aa/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Optical trimer: a theoretical physics approach to waveguide couplers</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>We study electromagnetic field propagation through an ideal, passive, three-dimensional, triangular three-waveguide coupler using a symmetry-based approach that capitalizes on the underlying <i>su</i>(3) symmetry. The planar version of this platform has already demonstrated its utility in photonic circuit design, enabling optical sampling, filtering, modulating, multiplexing, and switching. We aim to provide a practical tutorial on using group theory for the analysis of photonic lattices for those less familiar with abstract algebra methods. This approach serves as a powerful tool for optical designs. To illustrate this, we focus on the equilateral trimer, connected to the discrete Fourier transform, and the isosceles trimer, related to the golden ratio, providing stable single waveguide output. We also explore a scenario where the coupling in an equilateral coupler changes linearly with propagation distance. Going beyond the standard optical-quantum analogy, we show that coupled-mode equations for intensity and phase allows us to calculate envelopes for inputs within an intensity class, as well as individual input field amplitudes. This approach streamlines the design process by eliminating the need for point-to-point propagation calculations, highlighting the power of group theory in the field of photonic design.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad44aa">https://doi.org/10.1088/2040-8986/ad44aa</a> </div> </div> </div> </div> </div>  </div> </div> </div>       <div tabindex="0" role="tabpanel" id="accepted-manuscripts-tab" aria-labelledby="accepted-manuscripts" hidden="hidden"> <div class="reveal-container reveal-closed reveal-enabled reveal-container--jnl-tab"> <h2 class="tabpanel__title"> <button type="button" class="reveal-trigger event_tabs-accordion" aria-expanded="false"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg>Accepted manuscripts</button> </h2> <div class="reveal-content tabpanel__content" style="display: none;">  <p id="jnl-issue-disp-links" class="cf"> <button data-reveal-label-alt="Close all abstracts" class="reveal-all-trigger mr-2 small" data-reveal-text="Open all abstracts" data-link-purpose-append="in this tab" data-link-purpose-append-open="in this tab">Open all abstracts<span class="offscreen-hidden">, in this tab</span></button> </p>  <div class="art-list" id="wd-jnl-issue-art-list"> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad9619" class="art-list-item-title event_main-link">Power output optimization in complex laser systems by means of polarization control</a> <p class="small art-list-item-meta"> Jochcová et al  </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Power output optimization in complex laser systems by means of polarization control" data-link-purpose-append-open="Power output optimization in complex laser systems by means of polarization control">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9619/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View accepted manuscript<span class="offscreen-hidden">, Power output optimization in complex laser systems by means of polarization control</span></a> <a href="/article/10.1088/2040-8986/ad9619/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Power output optimization in complex laser systems by means of polarization control</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"> <p>Recently, the polarimetric method for thermally-induced polarization changes driven power losses (TIPCL) mitigation in complex laser systems has been developed. However, the final optimization relied on the four-parameter numerical process. This article provides a fully analytical direct calculation alternative to this optimization process. The validity of this approach is demonstrated on the previously published data from pulsed laser system Bivoj/DiPOLE100. The new approach provides a deeper insight into the polarimetric method for TIPCL suppression and also brings a more precise, reliable, and faster alternative to the numerical process used earlier.</p> </div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9619">https://doi.org/10.1088/2040-8986/ad9619</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad961a" class="art-list-item-title event_main-link">Compact on-chip arbitrary ratio power splitters based on an inverse design method</a> <p class="small art-list-item-meta"> Yang et al  </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Compact on-chip arbitrary ratio power splitters based on an inverse design method" data-link-purpose-append-open="Compact on-chip arbitrary ratio power splitters based on an inverse design method">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad961a/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View accepted manuscript<span class="offscreen-hidden">, Compact on-chip arbitrary ratio power splitters based on an inverse design method</span></a> <a href="/article/10.1088/2040-8986/ad961a/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Compact on-chip arbitrary ratio power splitters based on an inverse design method</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"> <p>Beam splitter (BS) is an important element for photonic integrated circuits (PICs). Conventional BSs designed by traditional approaches are too large to be suitable for PICs. An inverse design method which combines the adjoint method with the finite-difference frequency-domain method (FDFD) and the finite-difference time-domain method (FDTD) is proposed, in which the adjoint method is adopted to construct the structures while the FDFD is used to simulate the fields of the structures at the target wavelength, and the FDTD is used to study their fields and spectra at a wider wavelength range. And a series of compact Si-based arbitrary ratio power splitters (ARPSs) with splitting ratios ranging from 1:1 to 10:1 on 2.5 μm <b>×</b> 2.5 μm substrates have been designed by this method. Their splitting ratios fully match the design expectation accurately with total transmission efficiencies of more than 90% at the target wavelength of 1550 nm. Multi-channels BSs with 3:4:1 and 4:1:3:2 splitting ratios have been designed by this method as well, and have good performance with footprints of 2.5 μm <b>×</b> 2.5 μm and 3.2 μm <b>×</b> 3.2 μm, respectively. Furthermore, the Si3N4-based ARPSs with footprints of 3.0 μm <b>×</b> 4.0 μm have been designed, and their performance met expectations also. The results of 2:1 and 3:1 Si3N4-based ARPSs have been shown that total transmission efficiencies are 88.14% and 91.48% at the center wavelength of 1400 nm. Benefiting from the high speed of FDFD, this method has high optimization efficiency. And all the results simulated by FDTD agree well with FDFD. It provides a robust means to construct compact ARPSs and other nanophotonic devices.</p> </div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad961a">https://doi.org/10.1088/2040-8986/ad961a</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad9597" class="art-list-item-title event_main-link">Spatial coherence measurement of divergent X-ray beam without prerequisite source information</a> <p class="small art-list-item-meta"> Qingchen et al  </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Spatial coherence measurement of divergent X-ray beam without prerequisite source information" data-link-purpose-append-open="Spatial coherence measurement of divergent X-ray beam without prerequisite source information">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9597/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View accepted manuscript<span class="offscreen-hidden">, Spatial coherence measurement of divergent X-ray beam without prerequisite source information</span></a> <a href="/article/10.1088/2040-8986/ad9597/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Spatial coherence measurement of divergent X-ray beam without prerequisite source information</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"> <p>Understanding the spatial coherence of synchrotron X-ray sources is crucial for both source characterization and coherent experimental techniques. Here, we present a method to probe two-dimensional spatial complex coherence factor of divergent X-ray beams without prerequisite source information. Phase of the divergent beams is obtained by the transport-of-intensity equation, which is indispensable for the retrieval of complex coherence factor from the diffraction intensity of a Poisson-disk binary phase mask. Our method has been validated through simulations and is expected to be widely used in measuring coherence for fourth-generation synchrotron X-ray sources.&#xD;</p> </div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9597">https://doi.org/10.1088/2040-8986/ad9597</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <a href="/article/10.1088/2040-8986/ad9598" class="art-list-item-title event_main-link">Harmonic Achromatic Metalens with a Wide Field of View for AR/VR Applications</a> <p class="small art-list-item-meta"> Nasir et al  </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Harmonic Achromatic Metalens with a Wide Field of View for AR/VR Applications" data-link-purpose-append-open="Harmonic Achromatic Metalens with a Wide Field of View for AR/VR Applications">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9598/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View accepted manuscript<span class="offscreen-hidden">, Harmonic Achromatic Metalens with a Wide Field of View for AR/VR Applications</span></a> <a href="/article/10.1088/2040-8986/ad9598/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Harmonic Achromatic Metalens with a Wide Field of View for AR/VR Applications</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"> <p>Metalens, a cutting-edge optical marvel, revolutionizes many applications like cameras, telescopes, augmented reality (AR), and virtual reality (VR). Despite having an ultrathin structure, lightweight nature, and multifunctionality, achieving both achromatic imaging and a wide field of view (WFOV) remains a persistent challenge. To address these concerns, we present a novel approach using harmonic metalens featuring a quadratic phase profile to achieve achromatic behavior and WFOV simultaneously. This innovation enables WFOV imaging using the Fourier transform of quadratic phase profile and achromatic behavior at RGB wavelengths (blue λ=488 nm, green λ=532 nm, and red λ=633 nm) with a WFOV of up to ±45°. The designed harmonic metalens is insensitive to polarization with a numerical aperture of 0.76, and at normal incidence, its average focusing efficiency is greater than 50 %.Being polarization insensitive and achromatic, the proposed scheme will certainly broaden theutilization of metalenses in AR/VR, displays, and imaging applications. © 2024 Optical Society of America&#xD;</p> </div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9598">https://doi.org/10.1088/2040-8986/ad9598</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad9599" class="art-list-item-title event_main-link">The channel capacity of the free space communication link based on Bessel-like beams</a> <p class="small art-list-item-meta"> Litvin et al  </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="The channel capacity of the free space communication link based on Bessel-like beams" data-link-purpose-append-open="The channel capacity of the free space communication link based on Bessel-like beams">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9599/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View accepted manuscript<span class="offscreen-hidden">, The channel capacity of the free space communication link based on Bessel-like beams</span></a> <a href="/article/10.1088/2040-8986/ad9599/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, The channel capacity of the free space communication link based on Bessel-like beams</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"> <p>This study investigates the information channel capacity of free-space communication links based on Bessel-like beams and compares it to that of conventional Gaussian beams. We examine optical communication links employing amplitude coding for beams with Bessel-like beam spatial field distribution and orbital angular momentum-based coding for single-photon optical communication. Our study explores both unperturbed and perturbed propagation scenarios, considering random phase fluctuations caused by atmospheric turbulence and amplitude attenuation due to absorbing obstacles. Our results show that Bessel-like beams provide higher channel capacity than Gaussian beams at short distances (within a few kilometers&#xD;of propagation distance), but Gaussian beams outperform Bessel-like beams at longer distances. In turbulent environments, Bessel-like beams experience more significant capacity degradation than Gaussian beams, though they maintain higher capacity in orbital angular momentum-based single-photon links for distances under 1-2 km.</p> </div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9599">https://doi.org/10.1088/2040-8986/ad9599</a> </div> </div> </div> </div> </div>  <p> <a href="/journal/2040-8986/acceptedmanuscripts/1">More Accepted manuscripts</a> </p>  </div> </div> </div>     <div tabindex="0" role="tabpanel" id="open-access-articles-tab" aria-labelledby="open-access-articles" hidden="hidden"> <div class=" reveal-container reveal-closed reveal-enabled reveal-container--jnl-tab"> <h2 class="tabpanel__title"> <button type="button" class="reveal-trigger event_tabs-accordion" aria-expanded="false"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg>Open access</button> </h2> <div class="reveal-content tabpanel__content" style="display: none"> <p> <button data-reveal-label-alt="Close all abstracts" class="reveal-all-trigger mr-2 small" data-reveal-text="Open all abstracts" data-link-purpose-append="in this tab" data-link-purpose-append-open="in this tab"> Open all abstracts<span class="offscreen-hidden">, in this tab</span> </button> </p>  <div class="art-list"> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad9619" class="art-list-item-title event_main-link">Power output optimization in complex laser systems by means of polarization control</a> <p class="small art-list-item-meta"> Dominika Jochcová <em>et al</em> 2024 <em>J. Opt.</em> <b></b> </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Power output optimization in complex laser systems by means of polarization control" data-link-purpose-append-open="Power output optimization in complex laser systems by means of polarization control">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9619/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Power output optimization in complex laser systems by means of polarization control</span></a> <a href="/article/10.1088/2040-8986/ad9619/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Power output optimization in complex laser systems by means of polarization control</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Recently, the polarimetric method for thermally-induced polarization changes driven power losses (TIPCL) mitigation in complex laser systems has been developed. However, the final optimization relied on the four-parameter numerical process. This article provides a fully analytical direct calculation alternative to this optimization process. The validity of this approach is demonstrated on the previously published data from pulsed laser system Bivoj/DiPOLE100. The new approach provides a deeper insight into the polarimetric method for TIPCL suppression and also brings a more precise, reliable, and faster alternative to the numerical process used earlier.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9619">https://doi.org/10.1088/2040-8986/ad9619</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad9599" class="art-list-item-title event_main-link">The channel capacity of the free space communication link based on Bessel-like beams</a> <p class="small art-list-item-meta"> Igor A Litvin <em>et al</em> 2024 <em>J. Opt.</em> <b></b> </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="The channel capacity of the free space communication link based on Bessel-like beams" data-link-purpose-append-open="The channel capacity of the free space communication link based on Bessel-like beams">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9599/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, The channel capacity of the free space communication link based on Bessel-like beams</span></a> <a href="/article/10.1088/2040-8986/ad9599/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, The channel capacity of the free space communication link based on Bessel-like beams</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>This study investigates the information channel capacity of free-space communication links based on Bessel-like beams and compares it to that of conventional Gaussian beams. We examine optical communication links employing amplitude coding for beams with Bessel-like beam spatial field distribution and orbital angular momentum-based coding for single-photon optical communication. Our study explores both unperturbed and perturbed propagation scenarios, considering random phase fluctuations caused by atmospheric turbulence and amplitude attenuation due to absorbing obstacles. Our results show that Bessel-like beams provide higher channel capacity than Gaussian beams at short distances (within a few kilometers&#xD;of propagation distance), but Gaussian beams outperform Bessel-like beams at longer distances. In turbulent environments, Bessel-like beams experience more significant capacity degradation than Gaussian beams, though they maintain higher capacity in orbital angular momentum-based single-photon links for distances under 1-2 km.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9599">https://doi.org/10.1088/2040-8986/ad9599</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad9502" class="art-list-item-title event_main-link">Dual-band circular dichroism in chiral metamaterial absorber based on vanadium dioxide</a> <p class="small art-list-item-meta"> Zhenglan Zhou and Zhu Junwen 2024 <em>J. Opt.</em> <b></b> </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Dual-band circular dichroism in chiral metamaterial absorber based on vanadium dioxide" data-link-purpose-append-open="Dual-band circular dichroism in chiral metamaterial absorber based on vanadium dioxide">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9502/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Dual-band circular dichroism in chiral metamaterial absorber based on vanadium dioxide</span></a> <a href="/article/10.1088/2040-8986/ad9502/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Dual-band circular dichroism in chiral metamaterial absorber based on vanadium dioxide</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Chiral metamaterial absorbers are instrumental in a wide array of applications, encompassing multifaceted optoelectronic devices, information-encrypting metamaterials, and thermal-controlled imaging and detection systems. In this study, we showcase a Ꞩ-shaped chiral metamaterial integrated with a vanadium dioxide substrate, which enables dynamic tuning of THz dual-band circular dichroism. This absorber boasts spin-selective absorption, stemming from the selective excitation of the plasmon polaron mode on its horizontal microrod. Notably, right-handed circularly polarized light experiences near-perfect absorption at resonance, whereas left-handed circular polarization is absorbed to a much lesser degree, yielding pronounced circular dichroism. This exceptional chiral selectivity facilitates dual-band circular dichroism effects, with peak values reaching 0.814 and 0.784. Furthermore, by manipulating the conductivity of vanadium dioxide, we can dynamically adjust both the circular dichroism and absorption peaks of the chiral metamaterial. The maximum modulation depth of the circular dichroism response can attain values as high as 0.807 and 0.776. Our work presents a novel design strategy for the active control and modulation of circularly polarized light, thereby expanding the horizons of metamaterial absorber applications within the THz spectrum.&#xD;</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9502">https://doi.org/10.1088/2040-8986/ad9502</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad9503" class="art-list-item-title event_main-link">Differential sensing approaches for scattering-based holographic encryption</a> <p class="small art-list-item-meta"> Mohammadrasoul Taghavi and Edwin A Marengo 2024 <em>J. Opt.</em> <b></b> </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Differential sensing approaches for scattering-based holographic encryption" data-link-purpose-append-open="Differential sensing approaches for scattering-based holographic encryption">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad9503/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Differential sensing approaches for scattering-based holographic encryption</span></a> <a href="/article/10.1088/2040-8986/ad9503/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Differential sensing approaches for scattering-based holographic encryption</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>We develop a new scattering-based framework for the holographic encryption of analog and digital signals. The proposed methodology, termed "differential sensing", involves encryption of a wavefield image by means of two hard-to-guess, complex and random scattering media, namely, a background and a total (background plus scatterer) medium. Unlike prior developments in this area, not one but two scattering media are adopted for scram- bling of the probing wavefields (as encoded, e.g., in a suitable ciphertext hologram) and, consequently, this method offers enhanced security. In addition, while prior works have addressed methods based on physical imaging in the encryption phase followed by computational imaging in the decryption stage, we examine the complementary modal- ity wherein encryption is done computationally while decryption is done analogically, i.e., via the materialization of the required physical imaging system comprising the ciphertext hologram and the two unique (background and total) media. The practical feasibility of the proposed differential sensing approach is examined with the help of computer simulations incorporating multiple scattering. The advantages of this method relative to the conventional single-medium approach are discussed for both analog and digital signals. The paper also develops algorithms for the required in situ holography as well as a new wavefield-nulling-based approach for scattering-based encryption with envisioned applications in real-time customer validation and secure communication.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad9503">https://doi.org/10.1088/2040-8986/ad9503</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad93e5" class="art-list-item-title event_main-link">Synthesis and characterization of space-time light sheets: a tutorial</a> <p class="small art-list-item-meta"> Miguel A Romer <em>et al</em> 2024 <em>J. Opt.</em> <b></b> </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Synthesis and characterization of space-time light sheets: a tutorial" data-link-purpose-append-open="Synthesis and characterization of space-time light sheets: a tutorial">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad93e5/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Synthesis and characterization of space-time light sheets: a tutorial</span></a> <a href="/article/10.1088/2040-8986/ad93e5/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Synthesis and characterization of space-time light sheets: a tutorial</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Space-time wave packets (STWPs) are a new class of pulsed optical beams with many unique and intriguing attributes, including propagation invariance and tunable group velocity in linear optical media. STWPs are a form of spatiotemporally structured light, so their synthesis poses challenges that are not shared by conventional monochromatic structured light fields. We present here a detailed description of the synthesis of STWPs that are localized along one transverse dimension and uniform along the other; i.e., space-time light sheets. We also describe the main characterization schemes needed for benchmarking the unique properties of space-time light sheets.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad93e5">https://doi.org/10.1088/2040-8986/ad93e5</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad8c58" class="art-list-item-title event_main-link">On the suitability of rigorous coupled-wave analysis for fast optical force simulations</a> <p class="small art-list-item-meta"> Bo Gao <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 125104 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="On the suitability of rigorous coupled-wave analysis for fast optical force simulations" data-link-purpose-append-open="On the suitability of rigorous coupled-wave analysis for fast optical force simulations">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8c58/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, On the suitability of rigorous coupled-wave analysis for fast optical force simulations</span></a> <a href="/article/10.1088/2040-8986/ad8c58/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, On the suitability of rigorous coupled-wave analysis for fast optical force simulations</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Optical force responses underpin nanophotonic actuator design, which requires a large number of force simulations to optimize structures. Commonly used computation methods, such as the finite-difference time-domain method, and finite element methods, are resource intensive and require large amounts of calculation time when multiple structures need to be compared during optimization. This research demonstrates that performing optical force calculations on 2D-periodic structures using the rigorous coupled-wave analysis method is typically on the order of 10 times faster than other approaches and with sufficient accuracy to suit optical design purposes. Moreover, this speed increase is available on consumer grade laptops, avoiding the need for a high performance computing resource.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8c58">https://doi.org/10.1088/2040-8986/ad8c58</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad8c5c" class="art-list-item-title event_main-link">Enhancing UV photodetection sensitivity via pulsed laser optimization in SnO<sub>2</sub>:WO<sub>3</sub>/Si nanostructures</a> <p class="small art-list-item-meta"> Osamah Aldaghri 2024 <em>J. Opt.</em> <b>26</b> 125002 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Enhancing UV photodetection sensitivity via pulsed laser optimization in SnO2:WO3/Si nanostructures" data-link-purpose-append-open="Enhancing UV photodetection sensitivity via pulsed laser optimization in SnO2:WO3/Si nanostructures">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8c5c/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Enhancing UV photodetection sensitivity via pulsed laser optimization in SnO2:WO3/Si nanostructures</span></a> <a href="/article/10.1088/2040-8986/ad8c5c/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Enhancing UV photodetection sensitivity via pulsed laser optimization in SnO2:WO3/Si nanostructures</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>This manuscript investigates the deposition of tin oxide (SnO<sub>2</sub>)-doped tungsten trioxide (WO<sub>3</sub>) films on silicon (Si) substrate using a pulsed laser deposition technique for ultraviolet (UV) photodetection. The structural, optical, morphological, electrical, and photodetector properties of SnO<sub>2</sub>-doped WO<sub>3</sub> films were extensively investigated. The optical characteristics, studied using UV–vis spectroscopy, reveal a tunable optical bandgap ranging from 2.85 eV to 2.25 eV with increasing laser energy, which is consistent with the findings obtained from photoluminescence analysis. Raman spectroscopy demonstrates three vibration modes at 319.80, 603.30, and 866.20 cm<sup>−1</sup>. Field emission scanning electron microscopy images display spherical nanoparticles with average diameters of 43.90, 47.55, and 62.20 nm for 140, 180, and 220 mJ, respectively. Atomic force microscopy (AFM) measurements indicate an increase in the thin film grain size, roughness surface, and root mean square at higher laser energies (140, 180, and 220 mJ). Under illumination conditions, the photodetector gives a considerable amount of photocurrent (0.5 mA), which increases with higher laser energies. The proposed geometry demonstrates an excellent photo-response within a wavelength range of 350–550 nm, mainly at 420 nm. The optimized device illuminated with a laser energy of 220 mJ exhibits a response and recovery time of 352 ms and 737 ms, respectively, highlighting its potential for efficient and responsive applications.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8c5c">https://doi.org/10.1088/2040-8986/ad8c5c</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad8ceb" class="art-list-item-title event_main-link">Transient opto-thermal simulation analysis and experimental validation of LERP systems</a> <p class="small art-list-item-meta"> Elisavet Chatzizyrli <em>et al</em> 2024 <em>J. Opt.</em> <b>26</b> 125402 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Transient opto-thermal simulation analysis and experimental validation of LERP systems" data-link-purpose-append-open="Transient opto-thermal simulation analysis and experimental validation of LERP systems">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8ceb/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Transient opto-thermal simulation analysis and experimental validation of LERP systems</span></a> <a href="/article/10.1088/2040-8986/ad8ceb/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Transient opto-thermal simulation analysis and experimental validation of LERP systems</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>Solid-state technology has revolutionized the lighting industry. However, efficiency-droop-limited light emitting diodes (LEDs) introduce constraints to the luminances achieved, and as a result, laser diodes (LDs) are replacing them in the remote phosphor setup. This introduces a new family of lighting solutions, laser-excited remote phosphor (LERP) systems, which can outperform cutting-edge LEDs. LERP systems however have not yet reached their full potential as the high intensity laser beam induces high temperatures within the phosphor material whose emission characteristics heavily depend on temperature. For this reason, a simulation framework has been developed that combines optical and thermal analysis in order to study and optimize these systems and derive their temperature thresholds for sustainable long-term usage. The focus here is on transient analysis, where the interplay between optical and thermal effects can be accounted for and the time dynamics of the system can be investigated. This enables the study of operation points near or at the thermal quenching regime. Furthermore, advanced material models have been developed in order to incorporate the temperature-dependence. The experimental validation of the model has shown that experimental and simulated results are in good agreement.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8ceb">https://doi.org/10.1088/2040-8986/ad8ceb</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad8cec" class="art-list-item-title event_main-link">Spin angular momentum and optical chirality of Poincaré vector vortex beams</a> <p class="small art-list-item-meta"> Kayn A Forbes 2024 <em>J. Opt.</em> <b>26</b> 125401 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Spin angular momentum and optical chirality of Poincaré vector vortex beams" data-link-purpose-append-open="Spin angular momentum and optical chirality of Poincaré vector vortex beams">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8cec/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Spin angular momentum and optical chirality of Poincaré vector vortex beams</span></a> <a href="/article/10.1088/2040-8986/ad8cec/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Spin angular momentum and optical chirality of Poincaré vector vortex beams</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>The optical chirality and spin angular momentum of structured scalar vortex beams has been intensively studied in recent years. The pseudoscalar topological charge <span xmlns:xlink="http://www.w3.org/1999/xlink" class="inline-eqn"><span class="tex"><span class="texImage"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=" data-src="https://content.cld.iop.org/journals/2040-8986/26/12/125401/revision2/joptad8cecieqn1.gif" style="max-width: 100%;" alt="$\ell$" align="top"></img></span><script type="math/tex">\ell</script></span></span> of these beams is responsible for their unique properties. Constructed from a superposition of scalar vortex beams with topological charges <span xmlns:xlink="http://www.w3.org/1999/xlink" class="inline-eqn"><span class="tex"><span class="texImage"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=" data-src="https://content.cld.iop.org/journals/2040-8986/26/12/125401/revision2/joptad8cecieqn2.gif" style="max-width: 100%;" alt="$\ell_\text{A}$" align="top"></img></span><script type="math/tex">\ell_\text{A}</script></span></span> and <span xmlns:xlink="http://www.w3.org/1999/xlink" class="inline-eqn"><span class="tex"><span class="texImage"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=" data-src="https://content.cld.iop.org/journals/2040-8986/26/12/125401/revision2/joptad8cecieqn3.gif" style="max-width: 100%;" alt="$\ell_\text{B}$" align="top"></img></span><script type="math/tex">\ell_\text{B}</script></span></span>, cylindrical vector vortex beams are higher-order Poincaré modes which possess a spatially inhomogeneous polarization distribution. Here we highlight the highly tailorable and exotic spatial distributions of the optical spin and chirality densities of these higher-order structured beams under both paraxial (weak focusing) and non-paraxial (tight focusing) conditions. Our analytical theory can yield the spin angular momentum and optical chirality of each point on any higher-order or hybrid-order Poincaré sphere. It is shown that the tunable Pancharatnam topological charge <span xmlns:xlink="http://www.w3.org/1999/xlink" class="inline-eqn"><span class="tex"><span class="texImage"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=" data-src="https://content.cld.iop.org/journals/2040-8986/26/12/125401/revision2/joptad8cecieqn4.gif" style="max-width: 100%;" alt="$\ell_{\text{P}} = (\ell_\text{A} + \ell_\text{B})/2$" align="top"></img></span><script type="math/tex">\ell_{\text{P}} = (\ell_\text{A} + \ell_\text{B})/2</script></span></span> and polarization index <span xmlns:xlink="http://www.w3.org/1999/xlink" class="inline-eqn"><span class="tex"><span class="texImage"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=" data-src="https://content.cld.iop.org/journals/2040-8986/26/12/125401/revision2/joptad8cecieqn5.gif" style="max-width: 100%;" alt="$m = (\ell_\text{B} -\ell_\text{A})/2$" align="top"></img></span><script type="math/tex">m = (\ell_\text{B} -\ell_\text{A})/2</script></span></span> of the vector vortex beam plays a decisive role in customizing their spin and chirality spatial distributions. We also provide the correct analytical equations to describe a focused, non-paraxial scalar Bessel beam.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8cec">https://doi.org/10.1088/2040-8986/ad8cec</a> </div> </div> </div> </div> <div class="art-list-item reveal-container reveal-closed"> <div class="art-list-item-body"> <div class="eyebrow"> <span class="offscreen-hidden">The following article is </span><span class="red">Open access</span> </div> <a href="/article/10.1088/2040-8986/ad8584" class="art-list-item-title event_main-link">Fluorescence scattering under the Stokes–Mueller formalism determines the orientational distribution of fluorophores and the nature of optically active biological proteins</a> <p class="small art-list-item-meta"> Mohammad Zaffar 2024 <em>J. Opt.</em> <b>26</b> 125301 </p> <div class="art-list-item-tools small wd-abstr-upper"> <button type="button" class="reveal-trigger mr-2 nowrap"> <svg aria-hidden="true" class="fa-icon fa-icon--left fa-icon--flip" role="img" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 512"><path d="M137.4 374.6c12.5 12.5 32.8 12.5 45.3 0l128-128c9.2-9.2 11.9-22.9 6.9-34.9s-16.6-19.8-29.6-19.8L32 192c-12.9 0-24.6 7.8-29.6 19.8s-2.2 25.7 6.9 34.9l128 128z"/></svg><span class="reveal-trigger-label" data-reveal-text="Open abstract" data-reveal-label-alt="Close abstract" data-link-purpose-append="Fluorescence scattering under the Stokes–Mueller formalism determines the orientational distribution of fluorophores and the nature of optically active biological proteins" data-link-purpose-append-open="Fluorescence scattering under the Stokes–Mueller formalism determines the orientational distribution of fluorophores and the nature of optically active biological proteins">Open abstract</span> </button> <a href="/article/10.1088/2040-8986/ad8584/meta" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="View article"> <span class="icon-article"></span>View article<span class="offscreen-hidden">, Fluorescence scattering under the Stokes–Mueller formalism determines the orientational distribution of fluorophores and the nature of optically active biological proteins</span></a> <a href="/article/10.1088/2040-8986/ad8584/pdf" class="mr-2 mb-0 nowrap event_mini-link" data-event-action="PDF"><span class="icon-file-pdf"></span>PDF<span class="offscreen-hidden">, Fluorescence scattering under the Stokes–Mueller formalism determines the orientational distribution of fluorophores and the nature of optically active biological proteins</span></a> </div> <div class="reveal-content"> <div class="article-text view-text-small"><p>In the current paper, we represent intrinsic fluorescence anisotropies as four-dimensional normalized Stokes vectors defined by the maximum excitation and emission in the fluorescence process with respect to linear, linear-45 and circular polarizations of light. Depending upon the transition moments for absorption/excitation and emission of fluorophores, eight types of these Stokes vectors can be realized from the Mueller fluorescence matrix of the system. These Stokes vectors probe the orientational distribution of fluorophores and predict the nature of optically active biological proteins, whether laevorotatory or dextrorotatory. The orthogonality relation between the Stokes vectors corresponding to the excitation and emission processes of fluorescence connects the molecular ground and excited states of biological and non-biological systems.</p></div> <div class="art-list-item-tools small wd-abstr-lower"> <a class="mr-2" href="https://doi.org/10.1088/2040-8986/ad8584">https://doi.org/10.1088/2040-8986/ad8584</a> </div> </div> </div> </div> </div>  <p> <a href="/nsearch?currentPage=1&terms=&nextPage=2&previousPage=-1&searchDatePeriod=anytime&journals=2040-8986&accessType=open-access&orderBy=newest&pageLength=20">More Open Access articles</a> </p> </div> </div> </div>    </div>    <aside aria-label="Main column advert"> <div id='div-gpt-ad-1562594774007-0' style='width: 728px; height: 90px; display: block;'> <script> googletag.cmd.push(function () { googletag.display('div-gpt-ad-1562594774007-0'); }); </script> </div> </aside>   </div>  </div> </main> <div class="db2 tb2"> <div class="side-and-below">  <div class="sidebar-list" id="wd-jnl-links"> <h2 class="sidebar-list__heading">Journal links</h2> <ul class="sidebar-list__list"><li><a href="https://iopscience.iop.org/journal/2040-8986/page/submission-options" target="_blank" class="linkArrow normal link3"><b>Submit an article</b></a></li> <li><a href="https://publishingsupport.iopscience.iop.org/journals/journal-of-optics/about-journal-of-optics/">About the journal</a></li> <li><a href="https://publishingsupport.iopscience.iop.org/journals/journal-of-optics/editorial-board/">Editorial Board</a></li> <li><a href="https://publishingsupport.iopscience.iop.org/journals/journal-of-optics/">Author guidelines</a></li> <li><a href="https://publishingsupport.iopscience.iop.org/questions/volunteering-to-be-a-journal-reviewer">Review for this journal</li> <li><a href="https://publishingsupport.iopscience.iop.org/journals/journal-of-optics/about-journal-of-optics/#publication-charges">Publication charges</a></li> <li><a href="https://iopscience.iop.org/journal/2040-8986/page/jopt-journal-awards">Awards</a></li> <li><a href="https://iopscience.iop.org/journal/2040-8986/page/journal-collections">Journal collections</a></li> <li><a href="https://ioppublishing.org/librarians/">Pricing and ordering</a></li> <li><a href="/2040-8986/page/Contact us">Contact us</a></li></ul> </div>    <aside role="complementary" aria-label="Right sidebar adverts"> <div id='div-gpt-ad-1669279847892-0' style='min-width: 160px; 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