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.
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)
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).
