全正色散被动锁模掺镱全光纤环形激光器  

Passively mode-locked Yb^(3+)-doped all-fiber structure fiber ring laser with positive dispersion cavity

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

机构地区：[1]北京工业大学,北京100124

出　　处：《激光与红外》2011年第1期54-57,共4页Laser & Infrared

基　　金：教育部新世纪优秀人才支持计划(No.NCET-09-0002)资助

摘　　要：采用976nm半导体激光器为泵浦源,高掺杂Yb3+光纤为增益介质,利用非线性偏转效应实现被动锁模。得到了中心波长为1046nm,光谱宽度为24nm,脉冲宽度为54ps,平均输出功率为93mW的超短脉冲。通过缩短腔长,获得了较高的重复频率,达到41MHz。976 nm LD pumped laser is used as the pump source and high concentration Yb3＋-doped fiber is adopted as gain medium.Using the nonlinear polarization rotation（NPR） effect of the fiber,mode-locked pulse is obtained.The center wavelength of the mode-locked pulse is 1046 nm with 3 dB bandwidth of 24 nm.The pulse duration is 54 ps and the average power is 93 mW.In order to achieve a high fundamental repetition rate,we use a shorter cavity.The fundamental repetition rate reaches 41 MHz.

关 键 词：光纤激光器 被动锁模 非线性偏振旋转 环形腔 

分 类 号：TN248.4[电子电信—物理电子学]