High Power Laser and Particle Beams, Volume. 34, Issue 3, 031004(2022)
A thin-disk multi-pass pump scheme with large laser aperture
In this paper, a novel multi-pass pump scheme based on 4-f imaging is proposed. The scheme consists of a large parabolic mirror and two groups of folding prisms, which are the basic propagation structure of the scheme. The pump scheme has a theoretical aperture of 0-90° for laser transmission, which is wider than that of the commonly used pump schemes. The pump spot on the disk in the pump scheme has a good coincidence with sharp edges. With 344 W power injection and 18 times pumping, an average output of 141 W multi-mode laser is achieved. The optical to optical efficiency reaches 41%, and the slope efficiency is close to 50%.
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Hantian Chen, Jing Dong, Hailin Wang, Guangzhi Zhu, Xiao Zhu. A thin-disk multi-pass pump scheme with large laser aperture[J]. High Power Laser and Particle Beams, 2022, 34(3): 031004
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Received: Jul. 13, 2021
Accepted: --
Published Online: Mar. 28, 2022
The Author Email: Zhu Xiao (zx@hust.edu.cn)