2μm可调谐全光纤脉冲激光器  

Wavelength tunable all-fiber pulse laser at 2μm

作　　者：武宇 李保群 王天枢[1,2] WU Yu;LI Bao-qun;WANG Tian-shu(National and Local Joint Engineering Research Center of Space Photoelectric Technology Changchun University of Science and Technology,Changchun 130022,China;School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学空间光电技术国家与地方联合工程研究中心,吉林长春130022 [2]长春理工大学光电工程学院,吉林长春130022

出　　处：《激光与红外》2024年第7期1016-1021,共6页Laser & Infrared

基　　金：重庆市自然科学基金项目(No.CSTB2022NSCQ-MSX1342)资助。

摘　　要：本文采用光纤尾纤型马赫曾德型(MZ)结构的周期性铌酸锂(LiNbO 3)电光强度调制器进行主动调Q,设计了在环形腔结构中加入可调谐滤波器,实现了波长在1882 nm~1992 nm可调谐脉冲激光的稳定输出。调节施加在调制器上的信号频率,产生了激光器重复频率在15~70 kHz可调的脉冲激光。在重复频率为15 kHz时,泵浦功率为1 W时,获得最大单脉冲能量6.4μJ,峰值功率5.1 W。本研究具有全光纤化,波长大范围可调等优势,有助于进一步探索调Q脉冲激光的可调谐范围及其潜在应用。this paper,a periodic lithium niobate(LiNbO3)electro-optical intensity modulator with a fiber pigtail-type Mach Zengde(MZ)structure is used for active Q-tuning,and a tunable filter is designed to be incorporated into the ring cavity structure to achieve stable output of tunable pulsed lasers with wavelengths in the range of 1882 nm-1992nm.By adjusting the signal frequency applied to the modulator,pulse lasers with a tunable repetition frequency between 15 kHz and 70 kHz are produced.At a repetition frequency of 15 kHz and a pump power of 1 W,the maximum single-pulse energy obtained is 6.4μJ,with a peak power of 5.1W.This research exhibits advantages of all-fiber configuration and a wide tunable wavelength range,contributing to further exploration of the tunable range and potential applications of Q-switched pulse lasers.

关 键 词：光纤激光器 调Q脉冲 主动调Q 波长可调谐 2μm 

分 类 号：TN248[电子电信—物理电子学] O436[机械工程—光学工程]