Spectral Broadening of Femtosecond Optical Vortices at Filamentation in Fused Silica under the Conditions of the Anomalous Group Velocity Dispersion

Autor:	Sergei V Chekalin, E. V. Vasilyev, Svyatoslav A Shlenov, V. O. Kompanets, R. V. Skidanov
Rok vydání:	2021
Předmět:	Materials science Solid-state physics General Physics and Astronomy Critical value 01 natural sciences Molecular physics Filamentation 0103 physical sciences Femtosecond 010306 general physics Maxima Optical vortex Doppler broadening Gaussian beam
Zdroj:	Journal of Experimental and Theoretical Physics. 132:334-340
ISSN:	1090-6509 1063-7761
Popis:	Features of the spectral broadening of femtosecond optical vortices at self-action in a medium with the anomalous group velocity dispersion have been studied experimentally and numerically. It has been found that the broadening of the frequency–angular spectrum is accompanied by the appearance of localized maxima in the Stokes and anti-Stokes regions, which have a strip structure, near the nonlinear focus. It has been shown that in the medium with the anomalous group velocity dispersion the broadening of the spectrum in an optical vortex is smaller than that in a Gaussian beam at the same excess of the power above the critical value.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e37ba89401da9d69bbabc3673bb7695e https://doi.org/10.1134/s1063776121030183 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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