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

Li Xuepeng; Yang Jing; Yan Xingwei; Chen Zhongzheng; Yuan Lei; Yang Junbo; Wang Xiaojun; Peng Qinjun; Xu Zuyan

doi:10.11884/HPLPB202234.220078

Volume 34 Issue 8

Jul. 2022

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Article Navigation > High Power Laser and Particle Beams > 2022 > 34(8): 081004

Li Xuepeng, Yang Jing, Yan Xingwei, et al. Hundred-watt level VCSEL-pumped laser with near diffraction limit beam quality[J]. High Power Laser and Particle Beams, 2022, 34: 081004. doi: 10.11884/HPLPB202234.220078

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Li Xuepeng, Yang Jing, Yan Xingwei, et al. Hundred-watt level VCSEL-pumped laser with near diffraction limit beam quality[J]. High Power Laser and Particle Beams, 2022, 34: 081004. doi: 10.11884/HPLPB202234.220078

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

doi: 10.11884/HPLPB202234.220078

Li Xuepeng^{1, 2
,},
Yang Jing^{1, 3
,
,},
Yan Xingwei³,
Chen Zhongzheng^{1, 3},
Yuan Lei^{1, 3},
Yang Junbo⁴,
Wang Xiaojun^{1, 3
,
,},
Peng Qinjun^{1, 3},
Xu Zuyan^{1, 3}

1.
Key Laboratory of Solid State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2.
University of Chinese Academy of Sciences, Beijing 100190, China
3.
QiluZhongke Institute of Optical Physics and Engineering Technology, Jinan 250000, China
4.
College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China

Received Date: 2022-03-21
Rev Recd Date: 2022-05-19

Available Online: 2022-05-26

Publish Date: 2022-07-20

Abstract

Abstract

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.
- vertical-cavity surface-emitting laser,
- laser oscillator,
- near diffraction limit beam quality,
- high power,
- rod laser

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References(22)

References

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