Influence of atmospheric turbulence characteristics on the frequency of laser parameter fluctuations. Part 2. Laboratory experiment
F.Yu. Kanev1, Yu.G. Grekova2, A.L. Rukosuev3, I.V. Galaktionov3,4, Yu.V. Sheldakova3
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2National Research Tomsk Polytechnic University, Tomsk, Russia
3Institute of Geosphere Dynamics of the Russian Academy of Sciences, Moscow, Russia
4Moscow Technical University of Communications and Informatics, Moscow, Russia
Keywords: adaptive optics, atmospheric turbulence, laboratory experiment, experimental data processing
Abstract
Results of a laboratory experiment with a laser beam propagated in an artificially created turbulence are analyzed. Methods are described which transform a sequence of video frames with recorded intensity distribution into characteristics of laser radiation. As a result of the expansion of time-dependent functions into a trigonometric Fourier series, the frequency of parameter variations was determined and requirements for the operating speed of an adaptive system designed to compensate for distortions were formulated.
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