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

被引：4

作者：

Shlenov, S. A. ^{[1
,2
]}

Vasilyev, E. V. ^{[1
,2
]}

Chekalin, S., V ^{[3
]}

Kompanets, V. O. ^{[3
]}

Skidanov, R., V ^{[4
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia

[2] Moscow MV Lomonosov State Univ, Int Laser Ctr, Moscow 119991, Russia

[3] Russian Acad Sci, Inst Spect, Moscow 108840, Russia

[4] Samara State Univ, Samara 443086, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2021年 / 132卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

VORTEX; BEAMS; LIGHT;

D O I：

10.1134/S1063776121030183

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：334 / 340

页数：7