Intracavity-Pumped, Mid-Infrared Tandem Optical Parametric Oscillator Based on BaGa4Se7 Crystal

被引：8
|
作者：
He, Yixin [1 ,2 ]
Xu, Degang [1 ,2 ]
Yao, Jiyong [3 ]
Wang, Yuye [1 ,2 ]
Guo, Yangwu [3 ]
Zhu, Xianli [1 ,2 ]
Yan, Chao [1 ,2 ]
Tang, Longhuang [1 ,2 ]
Li, Jining [1 ,2 ]
Zhong, Kai [1 ,2 ]
Wu, Yicheng [4 ]
Yao, Jianquan [1 ,2 ]
机构：
[1] Tianjin Univ, Inst Laser & Optoelect, Sch Precis Instruments & Optoelect Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Key Lab Optoelect Informat Technol, Minist Educ, Tianjin 300072, Peoples R China
[3] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Funct Crystals & Laser Technol, Beijing Ctr Crystal R&D, Beijing 100190, Peoples R China
[4] Tianjin Univ Technol, Inst Funct Crystal Mat, Tianjin 300384, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Nonlinear crystals (BaGa4Se7 crystal); optical parametric oscillator; tunable mid-infrared source; MU-M; HIGH-EFFICIENCY; GENERATION; LASER; OPO; CONVERSION; POWER;
D O I：
10.1109/JPHOT.2019.2953097
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We have demonstrated a tunable mid-infrared tandem optical parametric oscillator (OPO) based on BaGa4Se7 (BGSe) crystal, which was intracavity-pumped by the tunable signal wave at similar to 1 mu m generated from a KTiOPO4-OPO (KTP-OPO) in doubly-resonant oscillator (DRO) configuration. Wavelength tuning of the mid-infrared tandem OPO was realized by tuning the pump wavelength at the fixed phase matching angle to reduce the effects of beam cutting and Fresnel reflection loss. Together with pump-tuning method, angle-tuning method was supplied to extend tuning range. A tuning range of 4.1-4.5 mu m was obtained with just 5 individual phase matching angles of the BGSe crystal. The maximum output energy of 1.92 mJ/pulse was obtained at 4.26 mu m with an estimated slope efficiency of 9.5%.
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页数：9
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