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Nonlinear Absorption and Scattering in Wide Band Gap Silver Sulfide Nanoparticles Colloid and Their Effects on the Optical Limiting
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sulfoxide (DMSO) under exposure to 532 nm, 15 nanosecond (ns) pulsed laser irradiation. Ultraviolet鈥搗isible absorption spectrometry (UV-Vis), X-ray diffraction (XRD), and transmission electron microscopy (TEM) are used to characterize the obtained nanocrystal samples. The band gap energy of colloid is determined by analyzing the UV鈥揤is absorption spectra of the Ag2S NPs using the band theory of semiconductors. Z-scan technique is used to characterize the optical nonlinear properties of the Ag2S nanoparticles (NPs). Large enhancement of two photon absorption effect is observed with increase in concentration of the Ag2S nanoparticles using open Z-scan measurements in the ns laser regime. The values of the nonlinear absorption coefficients are determined based on the local nonlinear responses including two photon absorption. The observed aperture dependence of the Ag2S NP limiting performance indicates that the nonlinear scattering plays an important role in the limiting action of the sample.The concentration dependence of the optical liming is also investigated. Our results demonstrate that the optical limiting threshold decreases with increasing the silver sulfide NPs in DMSO. <iframe src="https://publications.waset.org/abstracts/13234.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nanoscale%20materials" title="nanoscale materials">nanoscale materials</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20sulfide%20nanoparticles" title=" silver sulfide nanoparticles"> silver sulfide nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20absorption" title=" nonlinear absorption"> nonlinear absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20scattering" title=" nonlinear scattering"> nonlinear scattering</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20limiting" title=" optical limiting "> optical limiting </a> </p> <a href="https://publications.waset.org/abstracts/13234/nonlinear-absorption-and-scattering-in-wide-band-gap-silver-sulfide-nanoparticles-colloid-and-their-effects-on-the-optical-limiting" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13234.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">396</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 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