Dynamic control of adaptive optics correction of turbulent distortions in laser beams
V.V. Lavrinov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: датчик волнового фронта Шэка-Гартмана, параметры турбулентности, скорость ветра, алгоритм управления, Shack-Hartmann wavefront sensor, turbulence parameters, wind speed, control algorithm
Abstract
It is shown that the efficiency of adaptive correction of turbulent distortions of laser radiation increases if the correcting mirror is controlled via an algorithm synthesized on the basis of prediction of Shack-Hartmann wavefront sensor measurements. The use of the predictive control algorithm makes it possible to minimize the error that associated with the time delay of the system. The prediction of the surface reproduced by the mirror is performed on the basis of an analysis of phase fluctuations in time.
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