Er/Yb共掺双包层全光纤激光器的实验研究  

Experimental Study on Er/Yb Co-Doped Double-Clad All Fiber Laser

作　　者：任芳[1] 向望华[1,2] 祖鹏[1] 白扬博[1] 李楠[1] 伍成强[1] 师晓宙[1] 张贵忠[1,2] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津大学光电信息技术科学教育部重点实验室,天津300072

出　　处：《中国激光》2010年第3期622-626,共5页Chinese Journal of Lasers

基　　金：天津市科委基金(07JCYBJC06100);高等学校博士学科点专项科研基金(20050056004)资助课题

摘　　要：报道了Er3＋/Yb3＋共掺双包层光纤作为增益介质的全光纤环形腔激光器。用性能稳定,中心波长为976 nm的高功率半导体激光器作为抽运光源,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,通过调整抽运功率和偏振控制器的状态,实现了被动调Q,调Q-锁模和连续锁模的运转状态,其中调Q重复频率7.583~32.86 kHz,连续锁模重复频率为8.843 MHz。实验还观察到各种运转状态的光谱都为带状光谱,对这种现象进行了简单的分析。An all fiber ring laser with a small segment of Er3＋/Yb3＋co-doped double-clad fiber as gain medium,pumped by a stable 976 nm high power laser diode,is experimentally demonstrated.Using mode-locked mechanism by nonlinear polarization rotation technique,adjusting the polarization controllers orientations and pump,the stable operations of passive Q-switched,Q-switched-mode-locked and continual mode-locked were obtained experimentally.The pulse repetition rate of Q-switched is from 7.583 kHz to 32.86 kHz and the pulse repetition rate of continual mode-locked is 8.843 MHz.We also observed ribbon spectrum and analyzed the result simply.

关 键 词：光纤激光器 被动锁模 非线性偏振旋转 双包层光纤 环形腔 

分 类 号：TN248.1[电子电信—物理电子学]