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Vortex Beam in a Turbulent Kerr Medium for Atmospheric Communication

Authors :
Andrey D. Bulygin
Yury E. Geints
Ilia Y. Geints
Source :
Photonics, Vol 10, Iss 7, p 856 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

The dynamics of the topological charge of a vortex optical beam propagating in turbulent air while accounting for the cubic nonlinearity is theoretically considered. In a number of examples, we show that the optical beam, self-focusing, manifests itself ambiguously depending on the optical wave power. At near-critical values of beam power, self-focusing leads to enhanced spatial localization of optical vortices and substantial suppression of vortex walk-off relative to the beam axis caused by air turbulence. However, with increasing optical intensity, the modulation instability imposed by cubic nonlinearity becomes significant and contributes jointly with medium turbulence and leads to faster divergence of vortex beams.

Details

Language :
English
ISSN :
23046732
Volume :
10
Issue :
7
Database :
Directory of Open Access Journals
Journal :
Photonics
Publication Type :
Academic Journal
Accession number :
edsdoj.46de8698bb3147e38ef70adec2c7d946
Document Type :
article
Full Text :
https://doi.org/10.3390/photonics10070856