High-power fiber laser with real-time mode switchability  

作　　者：Hanshuo Wu Jiangtao Xu Liangjin Huang Xianglong Zeng Pu Zhou 吴函烁;徐江韬;黄良金;曾祥龙;周朴(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China;Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200444,China)

机构地区：[1]College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China [2]Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200444,China

出　　处：《Chinese Optics Letters》2022年第2期73-79,共7页中国光学快报（英文版）

基　　金：This work was supported in part by National Natural Science Foundation of China(No.61805280);Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology(No.SKL2020KF03);Research Plan of National University of Defense Technology(No.ZK19-07)。

摘　　要：A hundred-watt-level spatial mode switchable all-fiber laser is demonstrated based on a master oscillator power amplifier scheme.The performance of the amplifier with two seed lasers,i.e.,with the acoustically induced fiber grating (AIFG) mode converter inside and outside the seed laser cavity,is investigated.Real-time mode switching with millisecond scale switching time between the LP;and LP;modes while operating in full power (>100 W) is realized through an AIFG driven by radio frequency modulation.This work could provide a good reference for realizing high-power agile mode switchable fiber lasers for practical applications.

关 键 词：acoustically induced fiber grating high power fiber amplifier mode switching 

分 类 号：TN248[电子电信—物理电子学]