Narrow-linewidth BaGa_(4)Se_(7) optical parametric oscillator  

作　　者：Jintian Bian Hui Kong Qing Ye Jiyong Yao Lei Guo Xiaoquan Sun 卞进田;孔辉;叶庆;姚吉勇;郭磊;孙晓泉(State Key Laboratory of Pulsed Power Laser Technology,National University of Defense Technology,Hefei 230037,China;Advanced Laser Technology Laboratory of Anhui Province,Hefei 230037,China;Key Laboratory of Functional Crystals and Laser Technology,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;School of Mechanics and Photoelectric Physics,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]State Key Laboratory of Pulsed Power Laser Technology,National University of Defense Technology,Hefei 230037,China [2]Advanced Laser Technology Laboratory of Anhui Province,Hefei 230037,China [3]Key Laboratory of Functional Crystals and Laser Technology,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [4]School of Mechanics and Photoelectric Physics,Anhui University of Science and Technology,Huainan 232001,China

出　　处：《Chinese Optics Letters》2022年第4期54-59,共6页中国光学快报（英文版）

基　　金：This work was supported by the Director Foundation of State Key Laboratory of Pulsed Power Laser Technology(No.SKL2019ZR06);Open Research Foundation of State Key Laboratory of Pulsed Power Laser Technology(No.SKL2019KF05).

摘　　要：The linewidth of the BaGa_(4)Se_(7)(BGSe)optical parametric oscillator(OPO)was narrowed for the first time,to the best of our knowledge,by inserting a Fabry-Perot(FP)etalon into an L-shaped cavity.When a 15 mm long BGSe(56.3°,0°)was pumped by a 1064 nm laser,the peak wavelength was〜3529 nm,and the linewidth was 4.53 nm[3.64 cm^(-1)]under type I phase matching.After inserting a 350μm thick FP etalon,the linewidth was decreased to 1.27-2.05 nm.When the tilt angle of the etalon was 2.34°,the linewidth was 2.05 nm[1.65 cm^(-1)],and the peak wavelength was still〜3529 nm.When the tilt angle of the etalon was 3.90°,the peak wavelength was 3534.9 nm,and the linewidth was 1.27 nm(1.02 cm^(-1)),which was the narrowest linewidth of a BGSe OPO,to the best of our knowledge.The beam quality was also improved after inserting the FP etalon.

关 键 词：optical parametric oscillation narrow linewidth BaGa_(4)Sc_(7) 

分 类 号：TN752[电子电信—电路与系统]