Hundred-watt level high-order mode all-fiberized random distributed feedback Raman fiber laser with high mode purity  

作　　者：李阳 郝修路 安毅 邾毅 姚天甫 曾祥龙 周朴 Yang Li;Xiulu Hao;Yi An;Yi Zhu;Tianfu Yao;Xianglong Zeng;Pu Zhou(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China;Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication,Shanghai Institute for Advanced Communication and Data Science,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,Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication,Shanghai Institute for Advanced Communication and Data Science,Shanghai University,Shanghai 200444,China

出　　处：《Chinese Optics Letters》2023年第2期60-65,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.11704409,62061136013,and 12174445);the Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology(No.SKL2020KF03);the Special Fund for Hunan Provincial Innovative Province Building(No.2019RS3017)。

摘　　要：An all-fiberized random distributed feedback Raman fiber laser(RRFL)with LP_(11) mode output at 1134 nm has been demonstrated experimentally,where an intracavity acoustically induced fiber grating is employed for modal switching.The maximum output power of LP_(11) mode is 93.8 W with the modal purity of 82%,calculated by numerical mode decomposition technology based on stochastic parallel-gradient descent algorithm.To our best knowledge,this is the highest output power with high purity of LP_(11) mode generated from the RRFL.This work may pave a path towards advanced fiber lasers with special temporal and spatial characteristics for applications.

关 键 词：acoustically induced fiber grating LP_(11)mode mode decomposition random distributed feedback Raman fiber laser 

分 类 号：TN248[电子电信—物理电子学]