A 658-W VCSEL-pumped rod laser module with 52.6% optical efficiency

doi:10.1088/1674-1056/ac728f

中国物理B ›› 2022, Vol. 31 ›› Issue (8): 84207-084207.doi: 10.1088/1674-1056/ac728f

A 658-W VCSEL-pumped rod laser module with 52.6% optical efficiency

Xue-Peng Li(李雪鹏)^1,4, Jing Yang(杨晶)^1,2,3,†, Meng-Shuo Zhang(张梦硕)³, Tian-Li Yang(杨天利)^1,4, Xiao-Jun Wang(王小军)^1,2,3, and Qin-Jun Peng(彭钦军)^1,2,3

1 Key Laboratory of Solid State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
2 Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
3 Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan 250000, China;
4 University of Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2022-02-23 修回日期:2022-05-17 接受日期:2022-05-24 出版日期:2022-07-18 发布日期:2022-07-23
通讯作者: Jing Yang E-mail:yangjing@mail.ipc.ac.cn
基金资助:
The authors would like to thank Prof. Da-Fu Cui for his helpful discussion in the manuscript modification.

A 658-W VCSEL-pumped rod laser module with 52.6% optical efficiency

Xue-Peng Li(李雪鹏)^1,4, Jing Yang(杨晶)^1,2,3,†, Meng-Shuo Zhang(张梦硕)³, Tian-Li Yang(杨天利)^1,4, Xiao-Jun Wang(王小军)^1,2,3, and Qin-Jun Peng(彭钦军)^1,2,3

1 Key Laboratory of Solid State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
2 Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
3 Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan 250000, China;
4 University of Chinese Academy of Sciences, Beijing 100190, China

Received:2022-02-23 Revised:2022-05-17 Accepted:2022-05-24 Online:2022-07-18 Published:2022-07-23
Contact: Jing Yang E-mail:yangjing@mail.ipc.ac.cn
Supported by:
The authors would like to thank Prof. Da-Fu Cui for his helpful discussion in the manuscript modification.

摘要/Abstract

摘要： A high-efficiency and high-power vertical-cavity surface-emitting laser (VCSEL) side-pumped rod Nd:YAG laser with temperature adaptability are demonstrated. The VCSEL side-pumped laser module is designed and optimized. Five VCSEL arrays are symmetrically located around the laser rod and a large size diffused reflection chamber is designed to ensure a uniform pump distribution. Furthermore, the absorbed pump power distribution of the rod is simulated to verify the uniformity of the pump absorption. Finally, a proof-of-principle experiment is performed in short linear cavity laser with single laser module. A continuous-wave output power of 658 W at 1064 nm is obtained, the corresponding optical-to-optical efficiency is 52.6%, and the power variations are ±0.7% over 400 s and ±3.1% over the temperature range from 16 ℃ to 26 ℃. To the best of our knowledge, this is the highest output power and the highest optical-to-optical efficiency ever reported for VCSEL pumped solid-state lasers. By inserting a telescopic module into the cavity and optimizing the TEM₀₀ mode volume, the average beam quality is measured to be M²=1.34 under an output power of 102 W. The experimental results reveal that such a high power rod laser module with temperature stability is appropriate or field applications.

关键词: rod laser, VCSEL-pumped, high-efficiency, temperature adaptability

Abstract: A high-efficiency and high-power vertical-cavity surface-emitting laser (VCSEL) side-pumped rod Nd:YAG laser with temperature adaptability are demonstrated. The VCSEL side-pumped laser module is designed and optimized. Five VCSEL arrays are symmetrically located around the laser rod and a large size diffused reflection chamber is designed to ensure a uniform pump distribution. Furthermore, the absorbed pump power distribution of the rod is simulated to verify the uniformity of the pump absorption. Finally, a proof-of-principle experiment is performed in short linear cavity laser with single laser module. A continuous-wave output power of 658 W at 1064 nm is obtained, the corresponding optical-to-optical efficiency is 52.6%, and the power variations are ±0.7% over 400 s and ±3.1% over the temperature range from 16 ℃ to 26 ℃. To the best of our knowledge, this is the highest output power and the highest optical-to-optical efficiency ever reported for VCSEL pumped solid-state lasers. By inserting a telescopic module into the cavity and optimizing the TEM₀₀ mode volume, the average beam quality is measured to be M²=1.34 under an output power of 102 W. The experimental results reveal that such a high power rod laser module with temperature stability is appropriate or field applications.

Key words: rod laser, VCSEL-pumped, high-efficiency, temperature adaptability

中图分类号: (Diode-pumped lasers)

42.55.Xi

42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 42.60.Lh (Efficiency, stability, gain, and other operational parameters)

Xue-Peng Li(李雪鹏), Jing Yang(杨晶), Meng-Shuo Zhang(张梦硕), Tian-Li Yang(杨天利), Xiao-Jun Wang(王小军), and Qin-Jun Peng(彭钦军). A 658-W VCSEL-pumped rod laser module with 52.6% optical efficiency[J]. 中国物理B, 2022, 31(8): 84207-084207.

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A 658-W VCSEL-pumped rod laser module with 52.6% optical efficiency

A 658-W VCSEL-pumped rod laser module with 52.6% optical efficiency

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