Single-frequency upconverted laser generation by phase summation  

作　　者：Xin Zeng Shuzhen Cui Huawei Jiang Bowen Ruan Xin Cheng Jiaqi Zhou Zhiquan Lin Xuezong Yang Weibiao Chen Yan Feng 

机构地区：[1]Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou,China [2]Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai,China

出　　处：《High Power Laser Science and Engineering》2023年第2期20-25,共6页高功率激光科学与工程（英文版）

基　　金：The work was partly supported by the National Natural Science Foundation of China(No.62075226).

摘　　要：The phase summation effect in sum-frequency mixing process is utilized to avoid a nonlinearity obstacle in the power scaling of single-frequency visible or ultraviolet lasers.Two single-frequency fundamental lasers are spectrally broadened by phase modulation to suppress stimulated Brillouin scattering in fiber amplifier and achieve higher power.After sum-frequency mixing in a nonlinear optical crystal,the upconverted laser returns to single frequency due to phase summation,when the phase modulations on two fundamental lasers have a similar amplitude but opposite sign.The method was experimentally proved in a Raman fiber amplifier-based laser system,which generated a power-scalable sideband-free single-frequency 590 nm laser.The proposal manifests the importance of phase operation in wave-mixing processes for precision laser technology.

关 键 词：high power phase summation single-frequency laser stimulated Brillouin scattering sum-frequency generation 

分 类 号：TN24[电子电信—物理电子学]