中国激光, 2009, 36 (7): 1876, 网络出版: 2009-07-16
基于国产大模场面积双包层光纤的高重复频率纳秒脉冲光纤放大器
High Repetition Rate Nanosecond Pulse Fiber Amplifier Based on China-Made Large-Mode-Area Fiber
激光技术 光纤激光器 大模场面积光纤 主振荡放大 高重复频率 laser technique fiber laser large-mode-area fiber master oscillator power amplifier high repetition rate
摘要
以单模1064 nm 激光二极管(LD)光纤级联放大构成的全光纤化模块为种子光源, 以国产大模场面积(LMA)双包层掺镱光纤为放大器, 构成了高重复频率纳秒脉冲主振荡功率放大(MOPA)系统。实现了平均功率为59 W的脉冲放大激光输出, 中心波长1064 nm, 脉冲宽度22.7 ns(重复频率50 kHz时), 重复频率50~150 kHz连续可调。实验研究了激光脉冲的时域和光谱特性, 分析了光纤功率放大对激光脉冲波形的影响。
Abstract
A pulse master oscillator power amplifier (MOPA) system, which can provide high repetition rate and nanosecond pulse laser, was constructed by China-made large-mode-area(LMA) fiber and single mode 1064 nm laser-diode(LD) with fiber cascaded amplification system used as seed laser. The system generates up to 59 W average power of amplified radiation at a wavelength of 1064 nm with pulse duration of 22.7 ns(at 50 kHz repetition rate) and adjustable repetition frequency of 50~150 kHz. Some basic characteristics of this system, including the pulse temporal characteristics as well as the emission spectrum characteristics are investigated experimentally, and the impacts of the power amplification of the fiber to the pulse duration are analyzed.
刘侠, 杜松涛, 薛宇豪, 周军, 何兵, 楼祺洪, 董景星, 魏运荣, 宁鼎, 潘蓉. 基于国产大模场面积双包层光纤的高重复频率纳秒脉冲光纤放大器[J]. 中国激光, 2009, 36(7): 1876. Liu Xia, Du Songtao, Xue Yuhao, Zhou Jun, He Bing, Lou Qihong, Dong Jingxing, Wei Yunrong, Ning Ding, Pan Rong. High Repetition Rate Nanosecond Pulse Fiber Amplifier Based on China-Made Large-Mode-Area Fiber[J]. Chinese Journal of Lasers, 2009, 36(7): 1876.