Vol. 23, issue 05, article # 9

Zemlyanov A.A., Bulygin A.D. Evolution of the effective characteristics of high-power femtosecond laser radiation in air under the optical turbulence conditions. The Gauss beam approximation. // Optika Atmosfery i Okeana. 2010. V. 23. No. 05. P. 378-382 [in Russian].
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Abstract:

Approximate analytical solution of equation for effective radius of high-power femtosecond laser beam in the approximation of Gauss intensity profile at its self-focusing in the air is found. This equation was derived based on the equation for Wigner func-tion of laser radiation field in the developed optical turbulence conditions. Estimations for global self-focusing distance versus peak radiation power are presented as well as laser beam propagation coefficient characterizing its divergence after nonlinear focus.

Keywords:

femtosecond laser radiation, effective characteristics, optical turbulence

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