2-kW-level superfluorescent fiber source with flexible wavelength and linewidth tunable characteristics

作     者：Jun Ye Chenchen Fan Jiangming Xu Hu Xiao Jinyong Leng Pu Zhou 

作者机构：College of Advanced Interdisciplinary StudiesNational University of Defense TechnologyChangsha 410073China 

出 版 物：《High Power Laser Science and Engineering》 (高功率激光科学与工程（英文版）)

年 卷 期：2021年第9卷第4期

页      面：93-102页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 080902[工学-电路与系统] 08[工学] 0813[工学-建筑学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.62061136013 and 61905284) the Hunan Provincial Innovation Construct Project(No.2019RS3018) the Director Fund of the State Key Laboratory of Pulsed Power Laser Technology(No.SKL2019ZR01)。 

主　　题：fiber amplifiers high power superfluorescent fiber source tunable lasers 

摘      要：The superfluorescent fiber source(SFS)with tunable optical spectrum has shown great application potential in the sensing,imaging,and spectral combination.Here,we demonstrate for the first time a 2-kW-level wavelength and linewidth tunable SFS.Based on a flexible filtered SFS seed and three stages of fiber amplifiers,the output power can be scaled from the milliwatt level to about 2 kW,with a wavelength tuning range of 1068–1092 nm and a linewidth tuning range of 2.5–9.7 nm.Moreover,a numerical simulation is conducted based on the generalized nonlinear Schr?dinger equation,and the results reveal that the wavelength tuning range is limited by the decrease of seed power and the growth of amplified spontaneous emission,whereas the linewidth tuning range is determined by the gain competition and nonlinear Kerr effects.The developed wavelength and linewidth tunable SFS may be applied to scientific research and industrial processing.