全光纤结构锁模脉冲光纤放大器  

All-fiber mode-locked pulse fiber amplifier

作　　者：于峰[1] 葛廷武[1] 代京京[1] 张文启[1] 王璞[1] 王智勇[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100124

出　　处：《红外与激光工程》2012年第3期592-595,共4页Infrared and Laser Engineering

基　　金：教育部新世纪优秀人才支持计划(NCET-09-0002);国家科技重大专项(2010ZX04013-052)

摘　　要：随着光纤技术的不断发展,光纤激光器以其体积小、结构紧凑、高效率、光束质量好、高稳定性等优点逐渐受到重视。近些年,具有高峰值功率、高重复频率和高单脉冲能量的脉冲光纤激光器越来越成为研究和应用领域的热点。利用自行搭建的环形腔光纤激光器,获得了稳定的自启动锁模脉冲种子源,以掺Yb双包层光纤为增益介质,采用包层泵浦的方式和主振荡功率放大结构(MOPA),通过两级放大,使平均功率为70 mW的信号光得到25.2 dB的增益,获得了平均功率23.07 W,中心波长1 064 nm、重复频率41.3 MHz,脉冲宽度50 ps,单脉冲能量0.56μJ,峰值功率11.2 kW的锁模脉冲激光,光光转换效率为42.4%,实现了全光纤结构的锁模脉冲放大器。With the development of fiber technology,fiber laser is getting more and more important in industry for its small volume,high efficiency,high quality,and good stability.Recently,pulsed fiber laser,which has high peak power,high repetition and high pulse energy,is widely used in optical fiber communication,medical,especially for middle and low power processing.A steady and self-starting mode-locked pulse ring cavity fiber laser as seed source was obtained.The 70 mW signal got 25.2 dB gaining,using two steps cladding-pump in double cladding fiber and master-oscillator power amplifier（MOPA） structure.A mode-locked pulse laser was obtained,which was 23.07 W in average power,1064 nm wavelength,41.3 MHz in repetition frequency,50 ps in impulse duration,0.56 μJ in single pulse power,11.2 kW in peak power and 42.4% in conversion efficiency,realizing all-fiber mode-locked pulse fiber amplifier.

关 键 词：锁模脉冲光纤放大器 全光纤结构 主振荡功率放大器 包层泵浦 

分 类 号：TN24[电子电信—物理电子学]