全光纤结构超短脉冲光纤放大器  

All-fiber Ultra-short 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：《光电工程》2011年第3期115-118,共4页Opto-Electronic Engineering

基　　金：教育部新世纪优秀人才支持计划(NCET-09-0002)

摘　　要：本文利用掺Yb光纤的非线性偏振旋转效应搭建了光纤环形腔激光器,通过改变增益光纤的长度和耦合器输入输出的比例,对其进行优化,获得了稳定的自启动锁模脉冲,并以此作为种子源,采用主振荡功率放大MOPA全光纤结构,以双包层掺Yb光纤为增益介质实现了对种子源信号光的放大,获得了平均功率2.042W、中心波长1063.8nm、重复频率41.3MHz、脉冲宽度45ps、单脉冲能量49.4nJ、峰值功率1.1kW的锁模脉冲激光,光光转换效率为40.8%,为实现更高功率的全光纤结构的脉冲激光系统提供了条件。According to the nonlinear polarization rotated effect, a self-starting mode-locked ring cavity fiber laser is obtained and optimized through changing the fiber length and coupler parameters. As the seed of an all-fiber ultra-short pulse amplifier with master oscillator power amplifier （MOPA） structure, the pulse which has 2.042 W in average power, 1 063.8 nm in wavelength, 41.3 MHz in repetition frequency, 45 ps in impulse duration, 49.4 nJ in single pulse power and 1.1 kW in peak power, is realized, taking double-cladding fiber as the gain medium. The optical conversion efficiency of the whole system is 40.8%, which could be supportable to the higher power all-fiber pulse laser.

关 键 词：超短脉冲光纤放大器 全光纤结构 主振荡功率放大器 环形腔光纤激光器 

分 类 号：TN253[电子电信—物理电子学] TN248.1