A. L. Rukosuev,1 V. N. Belousov,2 A. N. Nikitin,1 Yu. V. Sheldakovahttps://orcid.org/0000-0002-5160-1194,1 A. V. Kudryashov,1,3 V. A. Bogachev,4 M. V. Volkov,4 S. G. Garanin,4 F. A. Starikov4
1Institute for Dynamics of Geospheres (Russian Federation) 2Lyratech LLC (Russian Federation) 3Moscow Polytechnic (Russian Federation) 4Institute of Laser Physics Research (Russian Federation)
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The results of experiments conducted on a laboratory setup of a fast adaptive optical system based on the use of FPGA as the main control element and a bimorph mirror as a wavefront corrector are presented. The adaptive system bandwidth ranged from a dozen Hertz to 2,000 Hertz. For independent control of the quality of correction the intensity distribution in the far field was recorded. It is shown that for a good correction of the wavefront the system bandwidth should be an order of magnitude higher than the upper boundary of the spectrum of wavefront distortions caused by turbulence. A comparison of the model and experimental data is also presented.
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A. L. Rukosuev, V. N. Belousov, A. N. Nikitin, Yu. V. Sheldakova, A. V. Kudryashov, V. A. Bogachev, M. V. Volkov, S. G. Garanin, F. A. Starikov, "Wavefront correction of laser beam distorted by fan heater turbulence using an adaptive optical system with a frequency of 2000 Hz," Proc. SPIE 11678, Free-Space Laser Communications XXXIII, 116780P (5 March 2021); https://doi.org/10.1117/12.2578143