中国物理B ›› 2018, Vol. 27 ›› Issue (9): 94207-094207.doi: 10.1088/1674-1056/27/9/094207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

High-power and high optical conversion efficiency diode-end-pumped laser with multi-segmented Nd: YAG/Nd: YVO4

Meng-Yao Wu(吴梦瑶), Peng-Fei Qu(屈鹏飞), Shi-Yu Wang(王石语), Zhen Guo(过振), De-Fang Cai(蔡德芳), Bing-Bin Li(李兵斌)   

  1. 1 School of Physics and Optoelectonic Engineering, Xidian University, Xi'an 710071, China;
    2 Xi'an Institute of Electro-Mechanical Information Technology Research, Xi'an 710065, China
  • 收稿日期:2018-03-26 修回日期:2018-05-01 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: Shi-Yu Wang E-mail:stone_whisper@163.com
  • 基金资助:

    Project supported by the National Defense Pre-Research Foundation of China (Grant No. 9140A020105).

High-power and high optical conversion efficiency diode-end-pumped laser with multi-segmented Nd: YAG/Nd: YVO4

Meng-Yao Wu(吴梦瑶)1, Peng-Fei Qu(屈鹏飞)2, Shi-Yu Wang(王石语)1, Zhen Guo(过振)1, De-Fang Cai(蔡德芳)1, Bing-Bin Li(李兵斌)1   

  1. 1 School of Physics and Optoelectonic Engineering, Xidian University, Xi'an 710071, China;
    2 Xi'an Institute of Electro-Mechanical Information Technology Research, Xi'an 710065, China
  • Received:2018-03-26 Revised:2018-05-01 Online:2018-09-05 Published:2018-09-05
  • Contact: Shi-Yu Wang E-mail:stone_whisper@163.com
  • Supported by:

    Project supported by the National Defense Pre-Research Foundation of China (Grant No. 9140A020105).

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摘要：

A novel flat-flat resonator consisting of two crystals (Nd:YAG+Nd:YVO4) is established for power scaling in a diode-end-pumped solid-state laser. We systematically compare laser characteristics between multi-segmented (Nd:YAG+Nd:YVO4) and conventional composite (Nd:YAG+Nd:YAG) crystals to demonstrate the feasibility of spectral line matching for output power scale-up in end-pumped lasers. A maximum continuous-wave output power of 79.2 W is reported at 1064 nm, with Mx2=4.82, My2=5.48, and a pumping power of 136 W in the multi-segmented crystals (Nd:YAG+Nd:YVO4). Compared to conventional composite crystals (Nd:YAG+Nd:YAG), the optical-optical conversion efficiency of multi-segmented crystals (Nd:YAG+Nd:YVO4) from 808 nm to 1064 nm is enhanced from 30% to 58.8%, while the laser output sensitivity as affected by the diode-laser temperature is reduced from 55% to 9%.

关键词: diode-pumped solid-state laser, multi-segmented crystals (Nd:YAG+Nd:YVO4), spectral line matching, diode-laser temperature

Abstract:

A novel flat-flat resonator consisting of two crystals (Nd:YAG+Nd:YVO4) is established for power scaling in a diode-end-pumped solid-state laser. We systematically compare laser characteristics between multi-segmented (Nd:YAG+Nd:YVO4) and conventional composite (Nd:YAG+Nd:YAG) crystals to demonstrate the feasibility of spectral line matching for output power scale-up in end-pumped lasers. A maximum continuous-wave output power of 79.2 W is reported at 1064 nm, with Mx2=4.82, My2=5.48, and a pumping power of 136 W in the multi-segmented crystals (Nd:YAG+Nd:YVO4). Compared to conventional composite crystals (Nd:YAG+Nd:YAG), the optical-optical conversion efficiency of multi-segmented crystals (Nd:YAG+Nd:YVO4) from 808 nm to 1064 nm is enhanced from 30% to 58.8%, while the laser output sensitivity as affected by the diode-laser temperature is reduced from 55% to 9%.

Key words: diode-pumped solid-state laser, multi-segmented crystals (Nd:YAG+Nd:YVO4), spectral line matching, diode-laser temperature

中图分类号:  (Lasers)

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