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.
出处
《中国激光》
EI
CAS
CSCD
北大核心
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
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
fiber laser
passive mode-locked
nonlinear polarization rotation
double-clad fiber
ring cavity
