Adaptive system for correcting optical aberrations of high-power lasers with dynamic determination of the reference wavefront. (July 2021)

• Record Type: Journal Article
• Authors: Kotov, A V; Perevalov, S E; Starodubtsev, M V; Zemskov, R S; Alexandrov, A G; Galaktionov, I V; Kudryashov, A V; Samarkin, V V; Soloviev, A A
• Is Part Of: Quantum electronics. Volume 51:Number 7(2021)
• Page Start: 593
• Page End: 596
• Publication Date: 2021-07
• Subjects: adaptive optical system -- deformable bimorph mirror -- focusing quality optimisation -- dynamic aberrations -- consideration of differential aberrations -- PEARL laser facility.; Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QEL17542
• Languages: English
• ISSNs: 1063-7818

Abstract

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.