High Power Laser and Particle Beams, Volume. 34, Issue 8, 081004(2022)

Hundred-watt level VCSEL-pumped laser with near diffraction limit beam quality

Xuepeng Li1,2, Jing Yang1,3、*, Xingwei Yan3, Zhongzheng Chen1,3, Lei Yuan1,3, Junbo Yang4, Xiaojun Wang1,3、*, Qinjun Peng1,3, and Zuyan Xu1,3
Author Affiliations
  • 1Key Laboratory of Solid State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • 2University of Chinese Academy of Sciences, Beijing 100190, China
  • 3QiluZhongke Institute of Optical Physics and Engineering Technology, Jinan 250000, China
  • 4College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China
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    A high power high beam quality vertical-cavity surface-emitting laser (VCSEL) side-pumped rod Nd:YAG laser oscillator is demonstrated. Based on the macro-channel optimization of the active heat sink for the VCSEL pump source, five 227 W VCSEL linear arrays are manufactured. By optimizing the structure of the side-pumped diffuse chamber, a rod laser module with an output capacity of 480 W and 49.7% optical-to-optical efficiency is developed. Accordingly, a telescopic module is introduced in the laser oscillator to realize a large fundamental mode volume, and thermal-near-unstable parameters is further optimized to suppress higher transversal modes. Finally, an output power of 114 W is obtained with an average beam quality factor M2 of 1.42, and the power variations are ± 0.9% over 200 s and ± 4.2% over the temperature range from 18 ℃ to 26 ℃. To the best of our knowledge, this is the first time that a hundred-watt level and near diffraction limit beam quality laser is generated by VCSEL pumped scheme. Due to the excellent temperature stability of the VCSEL, this high-power and high beam quality solid-state laser has a promising competence in industry, space and other complicated environments.

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    Xuepeng Li, Jing Yang, Xingwei Yan, Zhongzheng Chen, Lei Yuan, Junbo Yang, Xiaojun Wang, Qinjun Peng, Zuyan Xu. Hundred-watt level VCSEL-pumped laser with near diffraction limit beam quality[J]. High Power Laser and Particle Beams, 2022, 34(8): 081004

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    Paper Information

    Category: High Power Laser Physics and Technology

    Received: Mar. 21, 2022

    Accepted: --

    Published Online: Aug. 8, 2022

    The Author Email: Jing Yang (yangjing@mail.ipc.ac.cn), Xiaojun Wang (wangxj@mail.ipc.ac.cn)

    DOI:10.11884/HPLPB202234.220078

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