Over 255 mW single-frequency fiber laser with high slope efficiency and power stability based on an ultrashort Yb-doped crystal-derived silica fiber  

作　　者：YING WAN JIANXIANG WEN CHEN JIANG FENGZAI TANG JING WEN SUJUAN HUANG FUFEI PANG TINGYUN WANG 

机构地区：[1]Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication,School of Communication and Information Engineering,Shanghai University,Shanghai 200444,China [2]WMG,University of Warwick,Coventry CV47AL,UK [3]Optoelectronics Research Centre,University of Southampton,Southampton SO171BJ,UK

出　　处：《Photonics Research》2021年第5期649-656,共8页光子学研究（英文版）

基　　金：National Key Research and Development Project(2020YFB1805800);National Natural Science Foundation of China(61520106014,61675125,61705126,61735009);111 Project(D20031);Shanghai Professional Technical Public Service Platform of Advanced Optical Waveguide Intelligent Manufacturing and Testing(19DZ2294000)。

摘　　要：A single-frequency distributed Bragg reflector (DBR) fiber laser at 1030 nm has been demonstrated using a 0.7 cm long homemade Yb:YAG crystal-derived silica fiber (YCDSF).The absorption and emission cross sections of the YCDSF are 4.93×10^(-20)cm^(2) at 980 nm and 1.1×10^(-20)cm^(2)at 1030 nm.Using this gain fiber,an over 255 m W continuous-wave lasing in the constructed laser has been obtained at single transverse and longitudinal mode operation.The slope efficiency and the pump threshold of the fiber laser were up to ~35%and as low as 25 m W,respectively.The fiber laser also demonstrated an optical signal-to-noise ratio of 79 dB and a beam quality factor of 1.016 in two orthogonal directions.Its power fluctuation at 210.5 m W was less than 0.85%of the average power within 13 h.Moreover,the relative intensity noise and linewidth of the laser are also investigated at the different pump powers.The results indicate that the single-frequency DBR fiber laser has potential applications in high-quality seed sources and high-precision optical sensing.

关 键 词：fiber PUMP power 

分 类 号：TN248[电子电信—物理电子学]