A. V. Kotov, S. E. Perevalov, M. V. Starodubtsev, R. S. Zemskov, A. G. Alexandrov, I. V. Galaktionov, A. V. Kudryashov, V. V. Samarkin, A. A. Soloviev, “Adaptive system for correcting optical aberrations of high-power lasers with dynamic determination of the reference wavefront”, Kvantovaya Elektronika, 2021, Volume 51, Number 7,Pages <nobr>593

This article is cited in 15 papers

Control of laser radiation parameters

Adaptive system for correcting optical aberrations of high-power lasers with dynamic determination of the reference wavefront

A. V. Kotov^a, S. E. Perevalov^a, M. V. Starodubtsev^a, R. S. Zemskov^a, A. G. Alexandrov^b, I. V. Galaktionov^b, A. V. Kudryashov^bc, V. V. Samarkin^b, A. A. Soloviev^a

^a Federal Research Center The Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod
^b Institute of Dynamics of Geospheres, Russian Academy of Sciences, Moscow
^c Moscow Polytechnic University

Abstract: We present the results of the aberration correction of laser radiation wavefront using a dynamic method for determining the reference wavefront. The method, which is based on the processing of synchronously obtained data on the near- and far-field zones, significantly improves the focusing quality with active wavefront correction, especially under conditions of dynamic aberrations. An increase in the Strehl number S from 0.7 to 0.86 is demonstrated when a beam 18 cm in diameter is focused by an F/2.5 parabolic mirror.

Keywords: adaptive optical system, deformable bimorph mirror, focusing quality optimisation, dynamic aberrations, consideration of differential aberrations, PEARL laser facility.

Received: 15.02.2021
Revised: 01.06.2021