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dc.contributor.authorKumar, Manish-
dc.contributor.authorPerumbilavil, Sreekanth-
dc.contributor.authorGoel, Alok-
dc.contributor.authorPhilip, Reji-
dc.identifier.citationOptical Materials, 2021, Vol.118, p111226en_US
dc.descriptionRestricted Access. An open-access version is available at The SAO/NASA Astrophysics Data System (one of the alternative locations)en_US
dc.description.abstractWe report on enhanced nonlinear optical absorption and optical limiting in beta-MnO2 sponge-like nanowire network decorated with Ag nanoparticles excited by nanosecond laser. A simple two-step process is used to prepare the samples. The structure, morphology and the elemental analysis of the prepared samples are studied using x-ray diffraction, field emission scanning electron microscopy and energy-dispersive x-ray spectroscopy. Nonlinear optical absorption properties of the samples in solution is studied using the open aperture Z-scan technique employing 5 ns laser pulses at 532 nm. Nonlinear transmission measurements show that beta-MnO2 exhibit weak saturable absorption at low fluence and large optical limiting at high fluence, while upon decoration with Ag particles, Ag/beta-MnO2 shows strong saturable absorption at low fluence and enhanced optical limiting at higher fluence with an optical limiting threshold value three times lower than that of bare beta-MnO2 nanowires. The results indicate that these materials are potentially useful for constructing saturable absorbers and optical limiters.en_US
dc.publisherElsevier B.V.en_US
dc.rights2021 Elsevier B.V.en_US
dc.subjectMnO2 nanowiresen_US
dc.subjectNonlinear opticalen_US
dc.subjectSilver nanoparticles Nano-second laseren_US
dc.subjectNano-second laseren_US
dc.titleEnhanced optical nonlinearity in beta-MnO2 nanowire network decorated with Ag nanoparticlesen_US
Appears in Collections:Research Papers (LAMP)

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