15 December 2015 Features of infrared ultrabroadband supercontinuum generation under filamentation of femtosecond laser pulses in solid media with various bandgaps
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Proceedings Volume 9810, International Conference on Atomic and Molecular Pulsed Lasers XII; 98100M (2015) https://doi.org/10.1117/12.2225196
Event: XII International Conference on Atomic and Molecular Pulsed Lasers, 2015, Tomsk, Russian Federation
Abstract
Recent theoretical and experimental studies show that filamentation of femtosecond pulses in middle infrared range in solids can generate intense supercontinuum (SC) with width of a several octaves. The structure and dynamics of the spectrum formation is different from those observed during filamentation of femtosecond pulses in the near infrared range of the spectrum. With numerical modeling we investigate features of infrared (IR) SC generation in a number of solid-state media transparent in a broad infrared range with various bandgaps, including KBr (7.6 eV), ZnS (3.68 eV) and ZnSe (2.71 eV) for different pump wavelengths. SC formation dynamics is analyzed. With comparison of different media, including one with artificial bandgap, we find that lower bandgap decreases SC bandwidth and filamentation length.
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S. A. Frolov, S. A. Frolov, V. I. Trunov, V. I. Trunov, "Features of infrared ultrabroadband supercontinuum generation under filamentation of femtosecond laser pulses in solid media with various bandgaps", Proc. SPIE 9810, International Conference on Atomic and Molecular Pulsed Lasers XII, 98100M (15 December 2015); doi: 10.1117/12.2225196; https://doi.org/10.1117/12.2225196
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