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Atmospheric and Oceanic Optics

2018 year, number 2

Adaptive compensation of thermal distortions of multichannel laser radiation

F.Yu. Kanev1, N.A. Makenova1, V.P. Lukin1, O.L. Antipov2, I.D. Veretekhin3
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
2Institute of Applied Physics of the Russian Academy of Sciences, 46 Ul'yanov Street , 603600, Nizhny Novgorod , Russia
3National Research Tomsk State University, 36, Lenin Avenue, Tomsk, 634050, Russia
Keywords: адаптивная оптика, тепловое самовоздействие, многоканальное излучение, фазовое сопряжение, амплитудно-фазовое управление излучением, adaptive optics, thermal blooming, multichannel radiation, phase conjugation, amplitude-phase control over the beam wavefront


Results of simulation of multichannel radiation propagation under conditions of thermal blooming are presented and correction of nonlinear thermal distortion on the base of the beam phase control is considered. The results show the dependence of correction effectiveness on the number of channels and on the precision of reference beam phase retrieval. An additional increase in the effectiveness is possible with adjustment of amplification in the channels of the optical system, i.e., with the use of amplitude-phase control of radiation.