Optical beam wavefront control based on off-axis receiving of the atmospheric backscatter signal
V.A. Banakh1, V.V. Zhmylevskii2, A.B. Ignatiev2, V.V. Morozov2, I.N. Smalikho1, R.Sh. Tsvyk1, A.N. Shesternin1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
2JSC GSKB Almaz-Antey named after A.A. Raspletin, 80/16, Leningradsky av., Moscow, 125190, Russia
Keywords: wavefront, compensation, atmospheric backscatter, off-axis receiving
Subsection: OPTICAL WAVE PROPAGATION
Abstract
The theoretical and experimental results of study of feasibility of compensation of aberrations of the optical beam initial wavefront by the aperture sounding methods based on off-axis receiving of the atmosphere echo signal of an additional laser source are presented in the paper. It is shown experimentally that the off-axis receiving of the backscatter radiation provides for the refocusing of the additional laser source beam to the set range with simultaneous compensation of the initial wavefront aberrations of the additional and the main beams. As a result of the adaptive wavefront control the backscatter signal registered by an off-axis receiver on the ground path increases by 3–3.5 times.
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