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.
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)
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)。
