Er^3＋-Yb^3＋共掺杂光纤环型腔被动谐波锁模激光器  

Er^(3+)-Yb^(3+) codoped fiber ring cavity passive harmonically mode-locked laser

作　　者：向望华[1] 李楠[1] 崔宇[1] 任芳[1] 白扬博[1] 张贵忠[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,教育部光电信息技术科学重点实验室,天津300072

出　　处：《强激光与粒子束》2008年第11期1821-1826,共6页High Power Laser and Particle Beams

基　　金：天津市科委基金资助课题(013601011);高等学校博士学科点专项科研基金资助课题(20050056004)

摘　　要：报道了Er3+-Yb3+共掺杂光纤作为增益介质的环型腔光纤激光器。利用光纤的非线性偏振旋转效应产生可饱和吸收体的锁模机制,通过调整泵浦功率,调节偏振控制器的状态,实现了连续基波锁模和高阶谐波锁模两种稳定的锁模运转状态。其中连续基波锁模重复频率15.89 MHz,中心波长为1.557 nm,光谱宽度为9.9 nm。二阶谐波锁模重复率为31.79 MHz,三阶谐波锁模脉冲重复率为46.99 MHz。观察到了调Q锁模和调Q脉冲序列,给出了各种运转状态的实验结果并对多种锁模机理作了简要的分析。The paper demonstrated that by using the nonlinear polarization rotation as the mode-locking mechanism, the laser could operate stably in either CW fundamental wave mode-locked or high-order harmonically mode-locked regimes by changing the pump power and adjusting the polarization controller. Under the pump power of 10 roW, fundamental wave mode-locked pulses with repetition rate of 15.89 MHz, output spectrum width of 9.9 nm, central wavelength of 1. 557 nm was obtained. Under a different pump power of 75 roW, we obtained second harmonically mode-locked pulses with repetition rate of 31.79 MHz and third harmonically mode-locked pulses with repetition rate of 46.68 MHz. The paper also presented some preliminary theoretical analyses.

关 键 词：光纤激光器 环型腔锁模 谐波锁模 Er^3+-Yb^3+共掺杂光纤 

分 类 号：TN248.1[电子电信—物理电子学]