S. A. Bel'kov, V. O. Vasyukevich, G. N. Kachalin, A. O. Lipatov, A. N. Manachinckii, Yu. V. Shagalkin, А. V. Yakhlov, “Enhancing laser wavefront parameters in experiments using a new-generation multichannel laser facility”, Kvantovaya Elektronika, 2025, Volume 55, Number 1,Pages <nobr>1

Control of laser radiation parameter

Enhancing laser wavefront parameters in experiments using a new-generation multichannel laser facility

S. A. Bel'kov, V. O. Vasyukevich, G. N. Kachalin, A. O. Lipatov, A. N. Manachinckii, Yu. V. Shagalkin, А. V. Yakhlov

Federal State Unitary Enterprise "Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics", Sarov, Nizhny Novgorod region

Abstract: This paper describes a high-power, multichannel solid-state laser setup. The characteristics of adaptive system elements within an eight-channel laser module are presented. A wavefront correction method at the output of the laser module’s amplifying path, using Zernicke polynomials, is described, investigated, and tested. The results of correcting 'thermal' aberrations in the amplification path caused by the heating of active elements were obtained experimentally. The amplitude of the wavefront, PV = 0.71 μm and its mean-square deviation from planar RMS = 0.11 μm. The results of testing the correction method for the remaining channels of the module are presented.

Keywords: adaptive system, deformable mirror, wavefront sensor, aberrations, Zernike polynomials.

Received: 19.07.2024
Revised: 19.12.2024
Accepted: 20.12.2024