中国物理B ›› 2021, Vol. 30 ›› Issue (12): 124206-124206.doi: 10.1088/1674-1056/ac140d

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A 61-mJ, 1-kHz cryogenic Yb: YAG laser amplifier

Huijun He(何会军)1,2, Jun Yu(余军)1, Wentao Zhu(朱文涛)1, Qingdian Lin(林庆典)1, Xiaoyang Guo(郭晓杨)1,†, Cangtao Zhou(周沧涛)1, and Shuangchen Ruan(阮双琛)1,2   

  1. 1 Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Advanced Material Diagnostic Technology, and College of Engineering Physics, Shenzhen Technology University(SZTU), Shenzhen 518118, China;
    2 College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
  • 收稿日期:2021-05-27 修回日期:2021-07-09 接受日期:2021-07-14 出版日期:2021-11-15 发布日期:2021-11-25
  • 通讯作者: Xiaoyang Guo E-mail:guoxiaoyang@sztu.edu.cn
  • 基金资助:
    Project supported by the National National Science Foundation of China (Grant Nos. 12004262 and 62005184) and the Natural Science Foundation of Top Talent of SZTU (Grant No. 202024555101039).

A 61-mJ, 1-kHz cryogenic Yb: YAG laser amplifier

Huijun He(何会军)1,2, Jun Yu(余军)1, Wentao Zhu(朱文涛)1, Qingdian Lin(林庆典)1, Xiaoyang Guo(郭晓杨)1,†, Cangtao Zhou(周沧涛)1, and Shuangchen Ruan(阮双琛)1,2   

  1. 1 Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Advanced Material Diagnostic Technology, and College of Engineering Physics, Shenzhen Technology University(SZTU), Shenzhen 518118, China;
    2 College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
  • Received:2021-05-27 Revised:2021-07-09 Accepted:2021-07-14 Online:2021-11-15 Published:2021-11-25
  • Contact: Xiaoyang Guo E-mail:guoxiaoyang@sztu.edu.cn
  • Supported by:
    Project supported by the National National Science Foundation of China (Grant Nos. 12004262 and 62005184) and the Natural Science Foundation of Top Talent of SZTU (Grant No. 202024555101039).

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摘要： We report a diode-pumped rod-type Yb:YAG laser amplifier operating at 1 kHz. Cryogenic cooling method was adopted to make the Yb:YAG crystal work with four-level behavior. A single-frequency fiber laser acts as the seed in an actively Q-switched Yb:YAG oscillator. The resonator delivers 5.75-mJ pulses at 1 kHz with a pulse duration of approximately 40 ns. The pulses were amplified to 61 mJ in a four-pass rod-type Yb:YAG amplifier with optical-to-optical efficiency of 24% in the main amplifier. The M2 parameter of the output laser is <1.4.

关键词: ytterbium laser system, Yb:YAG laser amplifier, cryogenic laser amplification, high energy laser amplification

Abstract: We report a diode-pumped rod-type Yb:YAG laser amplifier operating at 1 kHz. Cryogenic cooling method was adopted to make the Yb:YAG crystal work with four-level behavior. A single-frequency fiber laser acts as the seed in an actively Q-switched Yb:YAG oscillator. The resonator delivers 5.75-mJ pulses at 1 kHz with a pulse duration of approximately 40 ns. The pulses were amplified to 61 mJ in a four-pass rod-type Yb:YAG amplifier with optical-to-optical efficiency of 24% in the main amplifier. The M2 parameter of the output laser is <1.4.

Key words: ytterbium laser system, Yb:YAG laser amplifier, cryogenic laser amplification, high energy laser amplification

中图分类号:  (Resonators, cavities, amplifiers, arrays, and rings)

  • 42.60.Da
42.60.-v (Laser optical systems: design and operation) 42.60.Rn (Relaxation oscillations and long pulse operation)