Search | arXiv e-print repository

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1"/>  <link rel="apple-touch-icon" sizes="180x180" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon-16x16.png"> <link rel="manifest" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/site.webmanifest"> <link rel="mask-icon" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/safari-pinned-tab.svg" color="#b31b1b"> <link rel="shortcut icon" href="https://static.arxiv.org/static/base/1.0.0a5/images/icons/favicon.ico"> <meta name="msapplication-TileColor" content="#b31b1b"> <meta name="msapplication-config" content="images/icons/browserconfig.xml"> <meta name="theme-color" content="#b31b1b">  <title>Search | arXiv e-print repository</title> <script defer src="https://static.arxiv.org/static/base/1.0.0a5/fontawesome-free-5.11.2-web/js/all.js"></script> <link rel="stylesheet" href="https://static.arxiv.org/static/base/1.0.0a5/css/arxivstyle.css" /> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ messageStyle: "none", extensions: ["tex2jax.js"], jax: ["input/TeX", "output/HTML-CSS"], tex2jax: { inlineMath: [ ['$','$'], ["\$","\$"] ], displayMath: [ ['$$','$$'], ["\\[","\\]"] ], processEscapes: true, ignoreClass: '.*', processClass: 'mathjax.*' }, TeX: { extensions: ["AMSmath.js", "AMSsymbols.js", "noErrors.js"], noErrors: { inlineDelimiters: ["$","$"], multiLine: false, style: { "font-size": "normal", "border": "" } } }, "HTML-CSS": { availableFonts: ["TeX"] } }); </script> <script src='//static.arxiv.org/MathJax-2.7.3/MathJax.js'></script> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/notification.js"></script> <link rel="stylesheet" href="https://static.arxiv.org/static/search/0.5.6/css/bulma-tooltip.min.css" /> <link rel="stylesheet" href="https://static.arxiv.org/static/search/0.5.6/css/search.css" /> <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha256-k2WSCIexGzOj3Euiig+TlR8gA0EmPjuc79OEeY5L45g=" crossorigin="anonymous"></script> <script src="https://static.arxiv.org/static/search/0.5.6/js/fieldset.js"></script> <style> radio#cf-customfield_11400 { display: none; } </style> </head> <body> <header><a href="#main-container" class="is-sr-only">Skip to main content</a>  <div class="attribution level is-marginless" role="banner"> <div class="level-left"> <a class="level-item" href="https://cornell.edu/"><img src="https://static.arxiv.org/static/base/1.0.0a5/images/cornell-reduced-white-SMALL.svg" alt="Cornell University" width="200" aria-label="logo" /></a> </div> <div class="level-right is-marginless"><p class="sponsors level-item is-marginless"><span id="support-ack-url">We gratefully acknowledge support from<br /> the Simons Foundation, <a href="https://info.arxiv.org/about/ourmembers.html">member institutions</a>, and all contributors. <a href="https://info.arxiv.org/about/donate.html">Donate</a></span></p></div> </div>  <div class="identity level is-marginless"> <div class="level-left"> <div class="level-item"> <a class="arxiv" href="https://arxiv.org/" aria-label="arxiv-logo"> <img src="https://static.arxiv.org/static/base/1.0.0a5/images/arxiv-logo-one-color-white.svg" aria-label="logo" alt="arxiv logo" width="85" style="width:85px;"/> </a> </div> </div> <div class="search-block level-right"> <form class="level-item mini-search" method="GET" action="https://arxiv.org/search"> <div class="field has-addons"> <div class="control"> <input class="input is-small" type="text" name="query" placeholder="Search..." aria-label="Search term or terms" /> <p class="help"><a href="https://info.arxiv.org/help">Help</a> | <a href="https://arxiv.org/search/advanced">Advanced Search</a></p> </div> <div class="control"> <div class="select is-small"> <select name="searchtype" aria-label="Field to search"> <option value="all" selected="selected">All fields</option> <option value="title">Title</option> <option value="author">Author</option> <option value="abstract">Abstract</option> <option value="comments">Comments</option> <option value="journal_ref">Journal reference</option> <option value="acm_class">ACM classification</option> <option value="msc_class">MSC classification</option> <option value="report_num">Report number</option> <option value="paper_id">arXiv identifier</option> <option value="doi">DOI</option> <option value="orcid">ORCID</option> <option value="author_id">arXiv author ID</option> <option value="help">Help pages</option> <option value="full_text">Full text</option> </select> </div> </div> <input type="hidden" name="source" value="header"> <button class="button is-small is-cul-darker">Search</button> </div> </form> </div> </div>  <div class="container"> <div class="user-tools is-size-7 has-text-right has-text-weight-bold" role="navigation" aria-label="User menu"> <a href="https://arxiv.org/login">Login</a> </div> </div> </header> <main class="container" id="main-container"> <div class="level is-marginless"> <div class="level-left"> <h1 class="title is-clearfix"> Showing 1–8 of 8 results for author: <span class="mathjax">Garratt, D</span> </h1> </div> <div class="level-right is-hidden-mobile">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> <div class="content"> <form method="GET" action="/search/physics" aria-role="search"> Searching in archive <strong>physics</strong>. <a href="/search/?searchtype=author&query=Garratt%2C+D">Search in all archives.</a> <div class="field has-addons-tablet"> <div class="control is-expanded"> <label for="query" class="hidden-label">Search term or terms</label> <input class="input is-medium" id="query" name="query" placeholder="Search term..." type="text" value="Garratt, D"> </div> <div class="select control is-medium"> <label class="is-hidden" for="searchtype">Field</label> <select class="is-medium" id="searchtype" name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> </div> <div class="control"> <button class="button is-link is-medium">Search</button> </div> </div> <div class="field"> <div class="control is-size-7"> <label class="radio"> <input checked id="abstracts-0" name="abstracts" type="radio" value="show"> Show abstracts </label> <label class="radio"> <input id="abstracts-1" name="abstracts" type="radio" value="hide"> Hide abstracts </label> </div> </div> <div class="is-clearfix" style="height: 2.5em"> <div class="is-pulled-right"> <a href="/search/advanced?terms-0-term=Garratt%2C+D&terms-0-field=author&size=50&order=-announced_date_first">Advanced Search</a> </div> </div> <input type="hidden" name="order" value="-announced_date_first"> <input type="hidden" name="size" value="50"> </form> <div class="level breathe-horizontal"> <div class="level-left"> <form method="GET" action="/search/"> <div style="display: none;"> <select id="searchtype" name="searchtype"><option value="all">All fields</option><option value="title">Title</option><option selected value="author">Author(s)</option><option value="abstract">Abstract</option><option value="comments">Comments</option><option value="journal_ref">Journal reference</option><option value="acm_class">ACM classification</option><option value="msc_class">MSC classification</option><option value="report_num">Report number</option><option value="paper_id">arXiv identifier</option><option value="doi">DOI</option><option value="orcid">ORCID</option><option value="license">License (URI)</option><option value="author_id">arXiv author ID</option><option value="help">Help pages</option><option value="full_text">Full text</option></select> <input id="query" name="query" type="text" value="Garratt, D"> <ul id="abstracts"><li><input checked id="abstracts-0" name="abstracts" type="radio" value="show"> <label for="abstracts-0">Show abstracts</label></li><li><input id="abstracts-1" name="abstracts" type="radio" value="hide"> <label for="abstracts-1">Hide abstracts</label></li></ul> </div> <div class="box field is-grouped is-grouped-multiline level-item"> <div class="control"> <span class="select is-small"> <select id="size" name="size"><option value="25">25</option><option selected value="50">50</option><option value="100">100</option><option value="200">200</option></select> </span> <label for="size">results per page</label>. </div> <div class="control"> <label for="order">Sort results by</label> <span class="select is-small"> <select id="order" name="order"><option selected value="-announced_date_first">Announcement date (newest first)</option><option value="announced_date_first">Announcement date (oldest first)</option><option value="-submitted_date">Submission date (newest first)</option><option value="submitted_date">Submission date (oldest first)</option><option value="">Relevance</option></select> </span> </div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.01700">arXiv:2411.01700</a> <span> [<a href="https://arxiv.org/pdf/2411.01700">pdf</a>, <a href="https://arxiv.org/format/2411.01700">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> </div> </div> <p class="title is-5 mathjax"> Attosecond Coherent Electron Motion in a Photoionized Aromatic Molecule </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Driver%2C+T">Taran Driver</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Z">Zhaoheng Guo</a>, <a href="/search/physics?searchtype=author&query=Isele%2C+E">Erik Isele</a>, <a href="/search/physics?searchtype=author&query=Grell%2C+G">Gilbert Grell</a>, <a href="/search/physics?searchtype=author&query=Ruberti%2C+M">Marco Ruberti</a>, <a href="/search/physics?searchtype=author&query=ONeal%2C+J+T">Jordan T. ONeal</a>, <a href="/search/physics?searchtype=author&query=Alexander%2C+O">Oliver Alexander</a>, <a href="/search/physics?searchtype=author&query=Beauvarlet%2C+S">Sandra Beauvarlet</a>, <a href="/search/physics?searchtype=author&query=Cesar%2C+D">David Cesar</a>, <a href="/search/physics?searchtype=author&query=Duris%2C+J">Joseph Duris</a>, <a href="/search/physics?searchtype=author&query=Garratt%2C+D">Douglas Garratt</a>, <a href="/search/physics?searchtype=author&query=Larsen%2C+K+A">Kirk A. Larsen</a>, <a href="/search/physics?searchtype=author&query=Li%2C+S">Siqi Li</a>, <a href="/search/physics?searchtype=author&query=Koloren%C4%8D%2C+P">P艡emysl Koloren膷</a>, <a href="/search/physics?searchtype=author&query=McCracken%2C+G+A">Gregory A. McCracken</a>, <a href="/search/physics?searchtype=author&query=Tuthill%2C+D">Daniel Tuthill</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+Z">Zifan Wang</a>, <a href="/search/physics?searchtype=author&query=Berrah%2C+N">Nora Berrah</a>, <a href="/search/physics?searchtype=author&query=Bostedt%2C+C">Christoph Bostedt</a>, <a href="/search/physics?searchtype=author&query=Borne%2C+K">Kurtis Borne</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+X">Xinxin Cheng</a>, <a href="/search/physics?searchtype=author&query=DiMauro%2C+L+F">Louis F. DiMauro</a>, <a href="/search/physics?searchtype=author&query=Doumy%2C+G">Gilles Doumy</a>, <a href="/search/physics?searchtype=author&query=Franz%2C+P+L">Paris L. Franz</a>, <a href="/search/physics?searchtype=author&query=Kamalov%2C+A">Andrei Kamalov</a> , et al. (28 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2411.01700v1-abstract-short" style="display: inline;"> In molecular systems, the ultrafast motion of electrons initiates the process of chemical change. Tracking this electronic motion across molecules requires coupling attosecond time resolution to atomic-scale spatial sensitivity. In this work, we employ a pair of attosecond x-ray pulses from an x-ray free-electron laser to follow electron motion resulting from the sudden removal of an electron from… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.01700v1-abstract-full').style.display = 'inline'; document.getElementById('2411.01700v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.01700v1-abstract-full" style="display: none;"> In molecular systems, the ultrafast motion of electrons initiates the process of chemical change. Tracking this electronic motion across molecules requires coupling attosecond time resolution to atomic-scale spatial sensitivity. In this work, we employ a pair of attosecond x-ray pulses from an x-ray free-electron laser to follow electron motion resulting from the sudden removal of an electron from a prototypical aromatic system, para-aminophenol. X-ray absorption enables tracking this motion with atomic-site specificity. Our measurements are compared with state-of-the-art computational modeling, reproducing the observed response across multiple timescales. Sub-femtosecond dynamics are assigned to states undergoing non-radiative decay, while few-femtosecond oscillatory motion is associated with electronic wavepacket motion in stable cation states, that will eventually couple to nuclear motion. Our work provides insight on the ultrafast charge motion preceding and initiating chemical transformations in moderately complex systems, and provides a powerful benchmark for computational models of ultrafast charge motion in matter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.01700v1-abstract-full').style.display = 'none'; document.getElementById('2411.01700v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.02189">arXiv:2403.02189</a> <span> [<a href="https://arxiv.org/pdf/2403.02189">pdf</a>, <a href="https://arxiv.org/format/2403.02189">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Plasma Physics">physics.plasm-ph</span> </div> </div> <p class="title is-5 mathjax"> Spectrotemporal shaping of attosecond x-ray pulses with a fresh-slice free-electron laser </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Robles%2C+R+R">River R. Robles</a>, <a href="/search/physics?searchtype=author&query=Larsen%2C+K+A">Kirk A. Larsen</a>, <a href="/search/physics?searchtype=author&query=Cesar%2C+D">David Cesar</a>, <a href="/search/physics?searchtype=author&query=Driver%2C+T">Taran Driver</a>, <a href="/search/physics?searchtype=author&query=Duris%2C+J">Joseph Duris</a>, <a href="/search/physics?searchtype=author&query=Franz%2C+P">Paris Franz</a>, <a href="/search/physics?searchtype=author&query=Garratt%2C+D">Douglas Garratt</a>, <a href="/search/physics?searchtype=author&query=Sudar%2C+N">Nicholas Sudar</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+J">Jun Wang</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+Z">Zhen Zhang</a>, <a href="/search/physics?searchtype=author&query=Cryan%2C+J">James Cryan</a>, <a href="/search/physics?searchtype=author&query=Marinelli%2C+A">Agostino Marinelli</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.02189v3-abstract-short" style="display: inline;"> We propose a scheme for coherently shaping attosecond x-ray pulses at free-electron lasers. We show that by seeding an FEL with a short coherent seed that overfills the amplification bandwidth, one can shape the wigner function of the pulse by controlling the undulator taper profile. The examples of controllable coherent pulse pairs and trains, as well as isolated spectrotemporally shaped pulses w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.02189v3-abstract-full').style.display = 'inline'; document.getElementById('2403.02189v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.02189v3-abstract-full" style="display: none;"> We propose a scheme for coherently shaping attosecond x-ray pulses at free-electron lasers. We show that by seeding an FEL with a short coherent seed that overfills the amplification bandwidth, one can shape the wigner function of the pulse by controlling the undulator taper profile. The examples of controllable coherent pulse pairs and trains, as well as isolated spectrotemporally shaped pulses with very broad coherent bandwidths are examined in detail. Existing attosecond XFELs can achieve these experimental conditions in a two-stage cascade, in which the coherent seed is generated by a short current spike in an electron bunch and shaped in an unspoiled region within the same bunch. We experimentally demonstrate the production of pulse pairs using this method at the Linac Coherent Light Source. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.02189v3-abstract-full').style.display = 'none'; document.getElementById('2403.02189v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.12764">arXiv:2402.12764</a> <span> [<a href="https://arxiv.org/pdf/2402.12764">pdf</a>, <a href="https://arxiv.org/format/2402.12764">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> Attosecond Delays in X-ray Molecular Ionization </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Driver%2C+T">Taran Driver</a>, <a href="/search/physics?searchtype=author&query=Mountney%2C+M">Miles Mountney</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+J">Jun Wang</a>, <a href="/search/physics?searchtype=author&query=Ortmann%2C+L">Lisa Ortmann</a>, <a href="/search/physics?searchtype=author&query=Al-Haddad%2C+A">Andre Al-Haddad</a>, <a href="/search/physics?searchtype=author&query=Berrah%2C+N">Nora Berrah</a>, <a href="/search/physics?searchtype=author&query=Bostedt%2C+C">Christoph Bostedt</a>, <a href="/search/physics?searchtype=author&query=Champenois%2C+E+G">Elio G. Champenois</a>, <a href="/search/physics?searchtype=author&query=DiMauro%2C+L+F">Louis F. DiMauro</a>, <a href="/search/physics?searchtype=author&query=Duris%2C+J">Joseph Duris</a>, <a href="/search/physics?searchtype=author&query=Garratt%2C+D">Douglas Garratt</a>, <a href="/search/physics?searchtype=author&query=Glownia%2C+J+M">James M. Glownia</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Z">Zhaoheng Guo</a>, <a href="/search/physics?searchtype=author&query=Haxton%2C+D">Daniel Haxton</a>, <a href="/search/physics?searchtype=author&query=Isele%2C+E">Erik Isele</a>, <a href="/search/physics?searchtype=author&query=Ivanov%2C+I">Igor Ivanov</a>, <a href="/search/physics?searchtype=author&query=Ji%2C+J">Jiabao Ji</a>, <a href="/search/physics?searchtype=author&query=Kamalov%2C+A">Andrei Kamalov</a>, <a href="/search/physics?searchtype=author&query=Li%2C+S">Siqi Li</a>, <a href="/search/physics?searchtype=author&query=Lin%2C+M">Ming-Fu Lin</a>, <a href="/search/physics?searchtype=author&query=Marangos%2C+J+P">Jon P. Marangos</a>, <a href="/search/physics?searchtype=author&query=Obaid%2C+R">Razib Obaid</a>, <a href="/search/physics?searchtype=author&query=O%27Neal%2C+J+T">Jordan T. O'Neal</a>, <a href="/search/physics?searchtype=author&query=Rosenberger%2C+P">Philipp Rosenberger</a>, <a href="/search/physics?searchtype=author&query=Shivaram%2C+N+H">Niranjan H. Shivaram</a> , et al. (12 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2402.12764v1-abstract-short" style="display: inline;"> The photoelectric effect is not truly instantaneous, but exhibits attosecond delays that can reveal complex molecular dynamics. Sub-femtosecond duration light pulses provide the requisite tools to resolve the dynamics of photoionization. Accordingly, the past decade has produced a large volume of work on photoionization delays following single photon absorption of an extreme ultraviolet (XUV) phot… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.12764v1-abstract-full').style.display = 'inline'; document.getElementById('2402.12764v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.12764v1-abstract-full" style="display: none;"> The photoelectric effect is not truly instantaneous, but exhibits attosecond delays that can reveal complex molecular dynamics. Sub-femtosecond duration light pulses provide the requisite tools to resolve the dynamics of photoionization. Accordingly, the past decade has produced a large volume of work on photoionization delays following single photon absorption of an extreme ultraviolet (XUV) photon. However, the measurement of time-resolved core-level photoionization remained out of reach. The required x-ray photon energies needed for core-level photoionization were not available with attosecond tabletop sources. We have now measured the x-ray photoemission delay of core-level electrons, and here report unexpectedly large delays, ranging up to 700 attoseconds in NO near the oxygen K-shell threshold. These measurements exploit attosecond soft x-ray pulses from a free-electron laser (XFEL) to scan across the entire region near the K-shell threshold. Furthermore, we find the delay spectrum is richly modulated, suggesting several contributions including transient trapping of the photoelectron due to shape resonances, collisions with the Auger-Meitner electron that is emitted in the rapid non-radiative relaxation of the molecule, and multi-electron scattering effects. The results demonstrate how x-ray attosecond experiments, supported by comprehensive theoretical modelling, can unravel the complex correlated dynamics of core-level photoionization. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.12764v1-abstract-full').style.display = 'none'; document.getElementById('2402.12764v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2202.12624">arXiv:2202.12624</a> <span> [<a href="https://arxiv.org/pdf/2202.12624">pdf</a>, <a href="https://arxiv.org/format/2202.12624">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> The mechanism of high harmonic generation in liquid alcohol </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Alexander%2C+O">Oliver Alexander</a>, <a href="/search/physics?searchtype=author&query=Barnard%2C+J+C+T">Jonathan C. T. Barnard</a>, <a href="/search/physics?searchtype=author&query=Larsen%2C+E+W">Esben W. Larsen</a>, <a href="/search/physics?searchtype=author&query=Avni%2C+T">Timur Avni</a>, <a href="/search/physics?searchtype=author&query=Jarosch%2C+S">Sebastian Jarosch</a>, <a href="/search/physics?searchtype=author&query=Ferchaud%2C+C">Clement Ferchaud</a>, <a href="/search/physics?searchtype=author&query=Gregory%2C+A">Andrew Gregory</a>, <a href="/search/physics?searchtype=author&query=Parker%2C+S">Susan Parker</a>, <a href="/search/physics?searchtype=author&query=Galinis%2C+G">Gediminas Galinis</a>, <a href="/search/physics?searchtype=author&query=Tofful%2C+A">Alexandra Tofful</a>, <a href="/search/physics?searchtype=author&query=Garratt%2C+D">Douglas Garratt</a>, <a href="/search/physics?searchtype=author&query=Matthews%2C+M+R">Mary R. Matthews</a>, <a href="/search/physics?searchtype=author&query=Marangos%2C+J+P">Jonathan P. Marangos</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2202.12624v1-abstract-short" style="display: inline;"> The observation of non-perturbative harmonic emission in solids from ultrashort laser pulses [1] sparked a wave of studies [2,3] as a probe of charge carrier dynamics in solids under strong fields and a route to extreme ultraviolet (XUV) attosecond photonic devices [4]. High harmonic generation (HHG) in liquids [5,6] is far less explored, despite their relevance to biological media, and the mechan… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.12624v1-abstract-full').style.display = 'inline'; document.getElementById('2202.12624v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2202.12624v1-abstract-full" style="display: none;"> The observation of non-perturbative harmonic emission in solids from ultrashort laser pulses [1] sparked a wave of studies [2,3] as a probe of charge carrier dynamics in solids under strong fields and a route to extreme ultraviolet (XUV) attosecond photonic devices [4]. High harmonic generation (HHG) in liquids [5,6] is far less explored, despite their relevance to biological media, and the mechanism is hotly debated. Using few-cycle pulses below the breakdown threshold, we demonstrate HHG in alcohol with data showing carrier-envelope-phase-dependent XUV spectra extending to 50 eV from isopropanol. We study the mechanism of the harmonic emission through its dependence on the driving field and find it to be consistent with a strong-field recombination mechanism. This maps emitted photon energy to the electron trajectories. We explore the role of the liquid environment in scattering the trajectories and find evidence that information on electron scattering from neighbouring molecules is encoded in the harmonic spectra. Using simulations we exploit this to estimate the scattering cross section and we confirm that the cross-section in liquid isopropanol is significantly reduced compared to vapour. Our findings suggest an \textit{in situ} measurement strategy for retrieving accurate values of scattering cross sections in liquids, and also a pathway to liquid-based attosecond XUV devices. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.12624v1-abstract-full').style.display = 'none'; document.getElementById('2202.12624v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2105.08854">arXiv:2105.08854</a> <span> [<a href="https://arxiv.org/pdf/2105.08854">pdf</a>, <a href="https://arxiv.org/format/2105.08854">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1126/science.abj2096">10.1126/science.abj2096 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Attosecond Coherent Electron Motion in Auger-Meitner Decay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Li%2C+S">Siqi Li</a>, <a href="/search/physics?searchtype=author&query=Driver%2C+T">Taran Driver</a>, <a href="/search/physics?searchtype=author&query=Rosenberger%2C+P">Philipp Rosenberger</a>, <a href="/search/physics?searchtype=author&query=Champenois%2C+E+G">Elio G. Champenois</a>, <a href="/search/physics?searchtype=author&query=Duris%2C+J">Joseph Duris</a>, <a href="/search/physics?searchtype=author&query=Al-Haddad%2C+A">Andre Al-Haddad</a>, <a href="/search/physics?searchtype=author&query=Averbukh%2C+V">Vitali Averbukh</a>, <a href="/search/physics?searchtype=author&query=Barnard%2C+J+C+T">Jonathan C. T. Barnard</a>, <a href="/search/physics?searchtype=author&query=Berrah%2C+N">Nora Berrah</a>, <a href="/search/physics?searchtype=author&query=Bostedt%2C+C">Christoph Bostedt</a>, <a href="/search/physics?searchtype=author&query=Bucksbaum%2C+P+H">Philip H. Bucksbaum</a>, <a href="/search/physics?searchtype=author&query=Coffee%2C+R">Ryan Coffee</a>, <a href="/search/physics?searchtype=author&query=DiMauro%2C+L+F">Louis F. DiMauro</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+L">Li Fang</a>, <a href="/search/physics?searchtype=author&query=Garratt%2C+D">Douglas Garratt</a>, <a href="/search/physics?searchtype=author&query=Gatton%2C+A">Averell Gatton</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Z">Zhaoheng Guo</a>, <a href="/search/physics?searchtype=author&query=Hartmann%2C+G">Gregor Hartmann</a>, <a href="/search/physics?searchtype=author&query=Haxton%2C+D">Daniel Haxton</a>, <a href="/search/physics?searchtype=author&query=Helml%2C+W">Wolfram Helml</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+Z">Zhirong Huang</a>, <a href="/search/physics?searchtype=author&query=LaForge%2C+A+C">Aaron C. LaForge</a>, <a href="/search/physics?searchtype=author&query=Kamalov%2C+A">Andrei Kamalov</a>, <a href="/search/physics?searchtype=author&query=Knurr%2C+J">Jonas Knurr</a>, <a href="/search/physics?searchtype=author&query=Lin%2C+M">Ming-Fu Lin</a> , et al. (16 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2105.08854v1-abstract-short" style="display: inline;"> In quantum systems, coherent superpositions of electronic states evolve on ultrafast timescales (few femtosecond to attosecond, 1 as = 0.001 fs = 10^{-18} s), leading to a time dependent charge density. Here we exploit the first attosecond soft x-ray pulses produced by an x-ray free-electron laser to induce a coherent core-hole excitation in nitric oxide. Using an additional circularly polarized i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.08854v1-abstract-full').style.display = 'inline'; document.getElementById('2105.08854v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2105.08854v1-abstract-full" style="display: none;"> In quantum systems, coherent superpositions of electronic states evolve on ultrafast timescales (few femtosecond to attosecond, 1 as = 0.001 fs = 10^{-18} s), leading to a time dependent charge density. Here we exploit the first attosecond soft x-ray pulses produced by an x-ray free-electron laser to induce a coherent core-hole excitation in nitric oxide. Using an additional circularly polarized infrared laser pulse we create a clock to time-resolve the electron dynamics, and demonstrate control of the coherent electron motion by tuning the photon energy of the x-ray pulse. Core-excited states offer a fundamental test bed for studying coherent electron dynamics in highly excited and strongly correlated matter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.08854v1-abstract-full').style.display = 'none'; document.getElementById('2105.08854v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2105.06507">arXiv:2105.06507</a> <span> [<a href="https://arxiv.org/pdf/2105.06507">pdf</a>, <a href="https://arxiv.org/format/2105.06507">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevX.11.031048">10.1103/PhysRevX.11.031048 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Correlation Driven Transient Hole Dynamics Resolved in Space and Time in the Isopropanol Molecule </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Barillot%2C+T">T. Barillot</a>, <a href="/search/physics?searchtype=author&query=Alexander%2C+O">O. Alexander</a>, <a href="/search/physics?searchtype=author&query=Cooper%2C+B">B. Cooper</a>, <a href="/search/physics?searchtype=author&query=Driver%2C+T">T. Driver</a>, <a href="/search/physics?searchtype=author&query=Garratt%2C+D">D. Garratt</a>, <a href="/search/physics?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/physics?searchtype=author&query=Haddad%2C+A+A">A. Al Haddad</a>, <a href="/search/physics?searchtype=author&query=Sanchez-Gonzalez%2C+A">A. Sanchez-Gonzalez</a>, <a href="/search/physics?searchtype=author&query=Ag%C3%A5ker%2C+M">M. Ag氓ker</a>, <a href="/search/physics?searchtype=author&query=Arrell%2C+C">C. Arrell</a>, <a href="/search/physics?searchtype=author&query=Bearpark%2C+M">M. Bearpark</a>, <a href="/search/physics?searchtype=author&query=Berrah%2C+N">N. Berrah</a>, <a href="/search/physics?searchtype=author&query=Bostedt%2C+C">C. Bostedt</a>, <a href="/search/physics?searchtype=author&query=Bozek%2C+J">J. Bozek</a>, <a href="/search/physics?searchtype=author&query=Brahms%2C+C">C. Brahms</a>, <a href="/search/physics?searchtype=author&query=Bucksbaum%2C+P+H">P. H. Bucksbaum</a>, <a href="/search/physics?searchtype=author&query=Clark%2C+A">A. Clark</a>, <a href="/search/physics?searchtype=author&query=Doumy%2C+G">G. Doumy</a>, <a href="/search/physics?searchtype=author&query=Feifel%2C+R">R. Feifel</a>, <a href="/search/physics?searchtype=author&query=Frasinski%2C+L+J">L. J. Frasinski</a>, <a href="/search/physics?searchtype=author&query=Jarosch%2C+S">S. Jarosch</a>, <a href="/search/physics?searchtype=author&query=Johnson%2C+A+S">A. S. Johnson</a>, <a href="/search/physics?searchtype=author&query=Kjellsson%2C+L">L. Kjellsson</a>, <a href="/search/physics?searchtype=author&query=Koloren%C4%8D%2C+P">P. Koloren膷</a>, <a href="/search/physics?searchtype=author&query=Kumagai%2C+Y">Y. Kumagai</a> , et al. (24 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2105.06507v1-abstract-short" style="display: inline;"> The possibility of suddenly ionized molecules undergoing extremely fast electron hole dynamics prior to significant structural change was first recognized more than 20 years ago and termed charge migration. The accurate probing of ultrafast electron hole dynamics requires measurements that have both sufficient temporal resolution and can detect the localization of a specific hole within the molecu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.06507v1-abstract-full').style.display = 'inline'; document.getElementById('2105.06507v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2105.06507v1-abstract-full" style="display: none;"> The possibility of suddenly ionized molecules undergoing extremely fast electron hole dynamics prior to significant structural change was first recognized more than 20 years ago and termed charge migration. The accurate probing of ultrafast electron hole dynamics requires measurements that have both sufficient temporal resolution and can detect the localization of a specific hole within the molecule. We report an investigation of the dynamics of inner valence hole states in isopropanol where we use an x-ray pump/x-ray probe experiment, with site and state-specific probing of a transient hole state localized near the oxygen atom in the molecule, together with an ab initio theoretical treatment. We record the signature of transient hole dynamics and make the first observation of dynamics driven by frustrated Auger-Meitner transitions. We verify that the hole lifetime is consistent with our theoretical prediction. This state-specific measurement paves the way to widespread application for observations of transient hole dynamics localized in space and time in molecules and thus to charge transfer phenomena that are fundamental in chemical and material physics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2105.06507v1-abstract-full').style.display = 'none'; document.getElementById('2105.06507v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. X 11, 031048 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.07441">arXiv:1909.07441</a> <span> [<a href="https://arxiv.org/pdf/1909.07441">pdf</a>, <a href="https://arxiv.org/format/1909.07441">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1039/C9CP03951A">10.1039/C9CP03951A <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Attosecond Transient Absorption Spooktroscopy: a ghost imaging approach to ultrafast absorption spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Driver%2C+T">Taran Driver</a>, <a href="/search/physics?searchtype=author&query=Li%2C+S">Siqi Li</a>, <a href="/search/physics?searchtype=author&query=Champenois%2C+E+G">Elio G. Champenois</a>, <a href="/search/physics?searchtype=author&query=Duris%2C+J">Joseph Duris</a>, <a href="/search/physics?searchtype=author&query=Ratner%2C+D">Daniel Ratner</a>, <a href="/search/physics?searchtype=author&query=Lane%2C+T">TJ Lane</a>, <a href="/search/physics?searchtype=author&query=Rosenberger%2C+P">Philipp Rosenberger</a>, <a href="/search/physics?searchtype=author&query=Al-Haddad%2C+A">Andre Al-Haddad</a>, <a href="/search/physics?searchtype=author&query=Averbukh%2C+V">Vitali Averbukh</a>, <a href="/search/physics?searchtype=author&query=Barnard%2C+T">Toby Barnard</a>, <a href="/search/physics?searchtype=author&query=Berrah%2C+N">Nora Berrah</a>, <a href="/search/physics?searchtype=author&query=Bostedt%2C+C">Christoph Bostedt</a>, <a href="/search/physics?searchtype=author&query=Bucksbaum%2C+P+H">Philip H. Bucksbaum</a>, <a href="/search/physics?searchtype=author&query=Coffee%2C+R">Ryan Coffee</a>, <a href="/search/physics?searchtype=author&query=DiMauro%2C+L+F">Louis F. DiMauro</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+L">Li Fang</a>, <a href="/search/physics?searchtype=author&query=Garratt%2C+D">Douglas Garratt</a>, <a href="/search/physics?searchtype=author&query=Gatton%2C+A">Averell Gatton</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Z">Zhaoheng Guo</a>, <a href="/search/physics?searchtype=author&query=Hartmann%2C+G">Gregor Hartmann</a>, <a href="/search/physics?searchtype=author&query=Haxton%2C+D">Daniel Haxton</a>, <a href="/search/physics?searchtype=author&query=Helml%2C+W">Wolfram Helml</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+Z">Zhirong Huang</a>, <a href="/search/physics?searchtype=author&query=LaForge%2C+A">Aaron LaForge</a>, <a href="/search/physics?searchtype=author&query=Kamalov%2C+A">Andrei Kamalov</a> , et al. (16 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1909.07441v1-abstract-short" style="display: inline;"> The recent demonstration of isolated attosecond pulses from an X-ray free-electron laser (XFEL) opens the possibility for probing ultrafast electron dynamics at X-ray wavelengths. An established experimental method for probing ultrafast dynamics is X-ray transient absorption spectroscopy, where the X-ray absorption spectrum is measured by scanning the central photon energy and recording the result… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.07441v1-abstract-full').style.display = 'inline'; document.getElementById('1909.07441v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.07441v1-abstract-full" style="display: none;"> The recent demonstration of isolated attosecond pulses from an X-ray free-electron laser (XFEL) opens the possibility for probing ultrafast electron dynamics at X-ray wavelengths. An established experimental method for probing ultrafast dynamics is X-ray transient absorption spectroscopy, where the X-ray absorption spectrum is measured by scanning the central photon energy and recording the resultant photoproducts. The spectral bandwidth inherent to attosecond pulses is wide compared to the resonant features typically probed, which generally precludes the application of this technique in the attosecond regime. In this paper we propose and demonstrate a new technique to conduct transient absorption spectroscopy with broad bandwidth attosecond pulses with the aid of ghost imaging, recovering sub-bandwidth resolution in photoproduct-based absorption measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.07441v1-abstract-full').style.display = 'none'; document.getElementById('1909.07441v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.13227">arXiv:1810.13227</a> <span> [<a href="https://arxiv.org/pdf/1810.13227">pdf</a>, <a href="https://arxiv.org/format/1810.13227">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1364/OL.44.000731">10.1364/OL.44.000731 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct characterisation of tuneable few-femtosecond dispersive-wave pulses in the deep UV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Brahms%2C+C">Christian Brahms</a>, <a href="/search/physics?searchtype=author&query=Austin%2C+D+R">Dane R. Austin</a>, <a href="/search/physics?searchtype=author&query=Tani%2C+F">Francesco Tani</a>, <a href="/search/physics?searchtype=author&query=Johnson%2C+A+S">Allan S. Johnson</a>, <a href="/search/physics?searchtype=author&query=Garratt%2C+D">Douglas Garratt</a>, <a href="/search/physics?searchtype=author&query=Travers%2C+J+C">John C. Travers</a>, <a href="/search/physics?searchtype=author&query=Tisch%2C+J+W+G">John W. G. Tisch</a>, <a href="/search/physics?searchtype=author&query=Russell%2C+P+S+J">Philip St. J. Russell</a>, <a href="/search/physics?searchtype=author&query=Marangos%2C+J+P">Jon P. Marangos</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1810.13227v2-abstract-short" style="display: inline;"> Dispersive wave emission (DWE) in gas-filled hollow-core dielectric waveguides is a promising source of tuneable coherent and broadband radiation, but so far the generation of few-femtosecond pulses using this technique has not been demonstrated. Using in-vacuum frequency-resolved optical gating, we directly characterise tuneable 3fs pulses in the deep ultraviolet generated via DWE. Through numeri… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.13227v2-abstract-full').style.display = 'inline'; document.getElementById('1810.13227v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.13227v2-abstract-full" style="display: none;"> Dispersive wave emission (DWE) in gas-filled hollow-core dielectric waveguides is a promising source of tuneable coherent and broadband radiation, but so far the generation of few-femtosecond pulses using this technique has not been demonstrated. Using in-vacuum frequency-resolved optical gating, we directly characterise tuneable 3fs pulses in the deep ultraviolet generated via DWE. Through numerical simulations, we identify that the use of a pressure gradient in the waveguide is critical for the generation of short pulses. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.13227v2-abstract-full').style.display = 'none'; document.getElementById('1810.13227v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Optics Letters, vol. 44, no. 4, p. 731, Feb. 2019 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

CINXE.COM

Search | arXiv e-print repository