一种基于增益调制技术的全光纤化脉冲Yb光纤激光器  

Gain Switched All-fiberized Pulse Yb Fiber Laser

作　　者：孙宏[1,2] 魏凯华[1,2] 钱凯[1,2] 陈滔 杨丁中[1,2] 姜培培 吴波[1,2] 沈永行 

机构地区：[1]现代光学仪器国家重点实验室 [2]浙江大学光电系,杭州310027

出　　处：《光子学报》2013年第1期43-47,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(No.61078015);国家重点基础研究发展计划(No.2011CB311803);浙江省教育厅项目(No.Y200909758)资助

摘　　要：以波长为975nm的半导体激光器作为泵浦源,周期性地脉冲泵浦一个包含Yb掺杂光纤和光纤光栅对的Yb光纤激光器,实现了基于增益调制技术的全光纤化高功率Yb光纤激光器的稳定脉冲输出.在50kHz重频下,采用20W的泵浦功率和2.4μs的泵浦脉冲宽度,获得了1 060nm波长脉冲宽度仅100ns的稳定脉冲激光输出,单脉冲激光能量约为20μJ.以此作为脉冲激光种子进行功率放大,获得了性能稳定的全光纤结构高功率脉冲激光输出,放大后单脉冲能量超过200μJ,激光放大器斜率效率达到60%.A gain-switched Yb-doped pulse fiber laser which was periodically pumped by a pulsed Laser Diode （LD） centering at wavelength of 975 nm was reported. The pulsed Yb fiber laser was composed of a piece of Yb doped double cladding gain fiber and a pair of fiber Bragg gratings. Under pump power of 20 W and pulse duration of 2.4μs at repetition rate of 50 kHz, stable laser pulse trains were obtained at 1 060 nm with pulse duration of 100 ns. The shot energy of every pulse was measured up to 20 μJ. Using this pulsed Yb fiber laser as the seed, a maser-oscillator power amplifier （MOPA） structured hig exceeding 200 μJ. The slope efficiency of

关 键 词：光纤激光器 掺Yb3+ 脉冲激光 增益调制 

分 类 号：TN248.1[电子电信—物理电子学]