High efficiency,low threshold,high repetition rate H-βFraunhofer line light at 486.1 nm generation by an intracavity frequency-doubled optical parametric oscillator  

作　　者：李翔翔 白云涛 丁欣 蒋国鑫 雷鹏 张兴瑞 孙杨 杜建耕 危芳莹 张若凡 吴亮 张贵忠 姚建铨 Xiangxiang Li;Yuntao Bai;Xin Ding;Guoxin Jiang;Peng Lei;Xingrui Zhang;Yang Sun;Jiangeng Du;Fangying Wei;Ruofan Zhang;Liang Wu;Guizhong Zhang;Jianquan Yao(Institute of Laser and Opto-electronics,School of Precision Instrument and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Opto-electronics Information Technology,Ministry of Education,Tianjin University,Tianjin 300072,China)

机构地区：[1]Institute of Laser and Opto-electronics,School of Precision Instrument and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China [2]Key Laboratory of Opto-electronics Information Technology,Ministry of Education,Tianjin University,Tianjin 300072,China

出　　处：《Chinese Optics Letters》2023年第9期101-106,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62175181)。

摘　　要：A high efficiency,low threshold,high repetition rate H-βFraunhofer line light at 486.1 nm was demonstrated.A high-efficiency KTP optical parametric oscillator was achieved by double-pass pumping with a high-maturity 5 kHz 532 nm laser.Thanks to the efficient intracavity frequency doubling of the circulating signal wave by a BIBO crystal,the threshold pump power of the 486.1 nm output was 0.9 W,and the maximum output power of 1.6 W was achieved under the pump power of7.5 W.The optical–optical conversion efficiency was 21.3%,with the pulse duration of 45.2 ns,linewidth of~0.12 nm,and beam quality factor M~2 of 2.83.

关 键 词：486.1 nm H-βFraunhofer line intracavity frequency-doubled optical parametric oscillator high efficiency low threshold high repetition rate 

分 类 号：TN248[电子电信—物理电子学] TN752