Beam quality for thin-disk multi-pass amplifier based on dual parabolic mirrors

Hantian Chen; Jing Dong; Hailin Wang; Guangzhi Zhu; Xiao Zhu

doi:10.1117/12.2606958

24 November 2021 Beam quality for thin-disk multi-pass amplifier based on dual parabolic mirrors

Hantian Chen, Jing Dong, Hailin Wang, Guangzhi Zhu, Xiao Zhu

Proceedings Volume 12060, AOPC 2021: Advanced Laser Technology and Applications; 120601Q (2021) https://doi.org/10.1117/12.2606958
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

We propose a thin-disk multi-pass amplifier based on a pair of conjugated parabolic mirrors. Pumped with 940nm laser diode and seeded with 1030nm ps regenerative amplifier, this novel amplifier scheme exhibits relatively high efficiency and insensitivity to the thermal lensing of the thin-disk caused by high pump power density. Parameters of the output beam have been measured. The beam quality of the seed laser was found to be deteriorated after propagating through the amplifier, with the M2 factor changed from 1.3 to 18.4. In order to acquire a further comprehension on the origins of the deterioration of beam quality, simulations and experiments were carried out.

Citation Download Citation

Hantian Chen, Jing Dong, Hailin Wang, Guangzhi Zhu, and Xiao Zhu "Beam quality for thin-disk multi-pass amplifier based on dual parabolic mirrors", Proc. SPIE 12060, AOPC 2021: Advanced Laser Technology and Applications, 120601Q (24 November 2021); https://doi.org/10.1117/12.2606958

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