The investigation of amplified radiation wavefront distortions in a cryogenically cooled laser amplifier

V. A. Petrov^ab, V. V. Petrov^abc, G. V. Kuptsov^ab, A. O. Kuptsova<sup>ac

a</sup> Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
^b Novosibirsk State Technical University, Novosibirsk, Russia
^c Novosibirsk State University, Novosibirsk, Russia

Abstract: Thermal and electronic contributions to wavefrront distortions of radiation amplified in the cryogenically cooled amplifier are investigated using laser scanning method. The optical path difference profile introduced to amplified radiation for pulse repetition rate in range 200–1000 Hz and pump radiation peak power of 200 W are analysed.

Keywords: diode pumping, high pulse repetition rate, cryogenic temperatures, wavefront distortions.

Received: 17.05.2024
Revised: 27.06.2024
Accepted: 28.06.2024

DOI: 10.61011/PJTF.2024.20.58936.19996

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