High power widely tunable mid-IR (5-7.2 gm) ZnGeP2 optical parametric oscillator pumped by a 2.09 gm laser

被引：9
作者：
Lv, Ze [1 ,3 ]
Shen, Yu [1 ,2 ]
Wen, Ya [1 ,4 ]
Wang, Er-Peng [4 ]
Wang, Zhi-Min [1 ,2 ]
Li, Wen-Long [5 ]
Bo, Yong [1 ,2 ]
Peng, Qin-Jun [1 ,2 ]
机构：
[1] Chinese Acad Sci, Key Lab Solid State Laser, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Key Lab Funct Crystal & Laser Technol, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100190, Peoples R China
[4] Inst Opt Phys & Engn Technol, Jinan 250000, Peoples R China
[5] Chengdu Dien Photoelect Technol Co Ltd DIEN TECH C, Chengdu 610100, Peoples R China
来源：
INFRARED PHYSICS & TECHNOLOGY | 2023年 / 134卷
关键词：
Mid-infrared; Widely tunable; High power; Optical parametric oscillator (OPO); MU-M; TISSUE ABLATION; CONVERSION; OPO;
D O I：
10.1016/j.infrared.2023.104879
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A high-power widely tunable nanosecond (ns) mid-infrared (mid-IR) optical parametric oscillator (OPO) in a ZnGeP2 crystal has been demonstrated. The OPO is pumped by a Q-switched 2.09 mu m Ho: YAG laser with 10 kHz repetition frequency. Based on optimizing the parameters of ZGP-OPO system, a maximum idler power as high as 5.47 W is achieved at 5.05 mu m with photon conversion efficiency of up to 46.4 %. By rotating the angle of the ZGP crystal, the idler tuning region across from 5 to 7.2 mu m is realized, with >1 W of idler power over almost the entire tuning region. The idler operation displays high pulse stability with peak to peak amplitude fluctuation less than +/- 2.8 % in near-Gaussian spatial mode.
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页数：5
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