高稳定性的全光纤化调Q脉冲光纤激光器研究  

Research on a high stability all-fiber Q-switched pulse fiber laser

作　　者：张培培[1] 张鹏[1] 黄榜才[1] 王晓龙[1] 张雪莲[1] 龙润泽 韩桂云[1] 梁小红[1] 

机构地区：[1]中国电子科技集团公司第四十六研究所,天津300220

出　　处：《激光与红外》2015年第8期902-906,共5页Laser & Infrared

基　　金：天津市科技计划项目(No.14RCGFGX00852)资助

摘　　要：搭建了一台高稳定性的全光纤调Q脉冲光纤激光器,采用光纤光栅和国产掺镱双包层光纤构成的线性F-P腔结构,以带尾纤的声光调制器(AOM)作为Q开关,并用915 nm波长的多模半导体激光器进行端面泵浦,实现了中心波长1064 nm,平均功率1.4 W的稳定脉冲激光输出。在重复频率20 k Hz的条件下,以该调Q激光器作为种子源,经过一级功率放大,最终获得了平均输出功率10.68 W,脉冲宽度120 ns的激光输出,相应的脉冲能量为0.5 m J,峰值功率为4.45 k W。并且该激光器在8 h内的功率不稳定性为1.1%。A high stable all-fiber Q-switched pulse fiber laser is reported.This laser uses a linear Fabry-Perot （F-P） cavity that is composed of the fiber Bragg grating and domestic ytterbium-doped double clad fiber.It takes pigtailed a-cousto-optic modulator （AOM）as Q-switch,meanwhile,it takes 915nm multimode laser diode （LD）as pumping source.The output of stable pulsed laser is achieved,whose center wavelength is 1064nm and the average output power is 1.4W.The output laser with the average power of 10.68W and the pulse width of 120ns is finally achieved at the repetition frequency of 20 kHz when the Q-switch laser is used as a seed source,corresponding to single pulse energy of 0.5mJ and peak power of 4.45 kW.And the fluctuation of laser power is 1.1% within 8 hours.

关 键 词：光纤激光器 声光调Q 掺镱光纤 全光纤 

分 类 号：TN248.1[电子电信—物理电子学]