Vol. 23, issue 05, article # 9
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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