摘要
对一种结构新颖的自调Ｑ掺铒光纤环形激光器的工作机理进行了研究。结果表明，该激光器中由光纤耦合器和半导体激光器芯片组成的反馈光路，依据光纤环中相向传输激光场相差的不同，对进入掺铒光纤的激光场进行选择反馈，在光纤环中激发幅度不断增强的光脉冲，引起掺铒光纤的瞬态增益饱和，实现激光器的自调Ｑ。理论分析能较好地解释实验中观察到的现象。
The mechanism of a novel structure self-Q- switched erbium-doped fiber ring laser has been investigated. The results show, according to phase difference of counterpropagating light fields in a fiber loop, the optical feedback which is consisted of afiber coupler and LD chip can feedback light fields into the erbium-doped fiber selectively,and the laser can generate optical pulses with increasing amplitude. Optical pulses lead to transient gain saturation of the erbium-doped fiber, which will result in self- Q- switching in the laser. The theoretical analysis is in good agreement with the experiments.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1996年第8期681-686,共6页
Chinese Journal of Lasers
基金
国家自然科学基金
国家教委博士点基金
关键词
自调Q
掺铒光纤激光器
环形激光器
self-Q-switching,feedback selectively,transient gain saturation
