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8 July 2022 2 μm single-frequency Ho:YAG pulsed laser with good beam quality
Chaoyong Chen, Chunqing Gao, Yang Yu, Huixing Dai, Xu Zhang, Kaixin Wang, Mingwei Gao, Qing Wang, Xunpeng Ma, Yiming Zhao
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Proceedings Volume 12280, 2021 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications; 122800D (2022) https://doi.org/10.1117/12.2620044
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only
Abstract
A 2 μm single-frequency, all-solid-state laser is one of the preferred light sources for coherent laser wind lidar and differential absorption lidar. In order to obtain 2 μm single frequency pulse laser with the high energy and hundred nanoseconds pulse width, the Ho:YAG non-planar ring cavity laser pumped by Tm:YLF solid state laser was used as the seed source to design and develop an injection-seeding single frequency Q-switched Ho:YAG pulse laser. A 2090 nm single-frequency pulse laser with an average pulse energy of 18.51 mJ and pulse width of 110.9 ns was obtained at a repetition rate of 200 Hz. The beam quality M2 factors of the output laser are 1.16 in the X direction and 1.25 in the Y direction, and the pulse spectrum width is 4.05 MHz.
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Chaoyong Chen, Chunqing Gao, Yang Yu, Huixing Dai, Xu Zhang, Kaixin Wang, Mingwei Gao, Qing Wang, Xunpeng Ma, and Yiming Zhao "2 μm single-frequency Ho:YAG pulsed laser with good beam quality", Proc. SPIE 12280, 2021 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 122800D (8 July 2022); https://doi.org/10.1117/12.2620044
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KEYWORDS
Pulsed laser operation
Q switched lasers
LIDAR
Solid state lasers
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