High power laser amplifier with cryogenic closed-loop cooling

G. V. Kuptsov; A. O. Kuptsova; V. A. Petrov; V. V. Petrov

doi:10.1117/12.3009660

2 November 2023 High power laser amplifier with cryogenic closed-loop cooling

G. V. Kuptsov, A. O. Kuptsova, V. A. Petrov, V. V. Petrov

Proceedings Volume 12920, XVI International Conference on Pulsed Lasers and Laser Applications; 129200R (2023) https://doi.org/10.1117/12.3009660
Event: XVI International Conference on Pulsed Lasers and Laser Applications, 2023, Tomsk, Russian Federation

Abstract

The work is devoted to the investigation of gain complex dependency on the pump radiation parameters. The dependencies of the pulse energy gain and the parameters of the amplified radiation on the parameters of the pump radiation in the amplifying cascade based on Yb:YAG active elements are experimentally studied. Small-signal gain with the magnitude of 19 was reached in three consecutive active elements with good beam quality and high pointing stability. A method is proposed for simultaneous experimental investigation of temperature and gain coefficient distributions. Thermal contribution to optical path difference is about 3 wavelengths of amplified radiation while the electronic contribution is 100 times smaller.

Citation Download Citation

G. V. Kuptsov, A. O. Kuptsova, V. A. Petrov, and V. V. Petrov "High power laser amplifier with cryogenic closed-loop cooling", Proc. SPIE 12920, XVI International Conference on Pulsed Lasers and Laser Applications, 129200R (2 November 2023); https://doi.org/10.1117/12.3009660

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