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Small-scale fluctuations of laser beam fluence at the large B-integral in ultra-high intensity lasers

Authors :
Vladislav Ginzburg
Mikhail Martyanov
Dmitry Silin
Anton Kochetkov
Ivan Yakovlev
Alexey Kuzmin
Sergey Mironov
Ilya Shaikin
Sergey Stukachev
Andrey Shaykin
Efim Khazanov
Source :
Optics Express. 31:4667
Publication Year :
2023
Publisher :
Optica Publishing Group, 2023.

Abstract

Analytical expressions for the spatial spectrum of fluence fluctuations of a laser pulse propagating in a medium with Kerr nonlinearity have been obtained. It is shown that inhomogeneities with a spatial scale much larger than the critical scale of self-focusing grow insignificantly even at large values of the B-integral. Experiments using BK7 glass and a KDP crystal as a nonlinear medium confirm the obtained theoretical results. This may be interesting for pulse post-compression, frequency doubling, and other experiments using transmission optical elements in ultra-high intensity lasers.

Details

ISSN :
10944087
Volume :
31
Database :
OpenAIRE
Journal :
Optics Express
Accession number :
edsair.doi...........4b8ca495afe8d81e219691fbabb5f9ab
Full Text :
https://doi.org/10.1364/oe.480792