| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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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 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 |
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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%.
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Received: 26 March 2018
Revised: 01 May 2018
Accepted manuscript online:
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| Fund: Project supported by the National Defense Pre-Research Foundation of China (Grant No. 9140A020105). |
Corresponding Authors:
Shi-Yu Wang
E-mail: stone_whisper@163.com
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Cite this article:
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) High-power and high optical conversion efficiency diode-end-pumped laser with multi-segmented Nd: YAG/Nd: YVO4 2018 Chin. Phys. B 27 094207
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