摘要
研究了在被动锁模掺铒光纤环形激光器中加入窄带滤波器对多脉冲产生的影响.在激光器的腔内插入一个窄带光纤布拉格光栅(FBG),限制激射带宽,可以在低阈值的情况下产生多脉冲.多脉冲的个数取决于泵浦功率的设置,激光器输出脉冲的个数可以分立可调.多脉冲的混沌态数值模拟进一步证实了上述结果.窄带滤波器可以加强多脉冲的产生,这有助于进一步理解光纤激光器中多脉冲的形成机制.
Multi-pulse generation based on a narrow-band filter in a passively mode-locked erbium-doped fiber ring laser is investigated experimentally. The low threshold multi-pulse is easily achieved by inserting a narrow-band Fiber Bragg Grating (FBG) filter into the laser ring cavity to limit the lasing bandwidth. Depending on the pump power settings, the number of output pulses canbe discretely tuned one by one. Moreover, the chaotic state of multi-pulse operation is also observed. The experimental results are further confirmed by the numerical simulations, which prove that a narrow-band filter could greatly enhance the multi-pulse generation.
出处
《华南师范大学学报(自然科学版)》
CAS
北大核心
2014年第4期43-47,共5页
Journal of South China Normal University(Natural Science Edition)
基金
国家自然科学基金项目(11074078
61378036
61307058
11304101)
广东省自然科学基金项目(S2013040016320)
关键词
被动锁模光纤激光器
多脉冲
窄带滤波器
a passively mode-locked fiber laser
muhipulses
narrow-band filter