基于光纤干涉环的掺Yb3 全光纤自调Q激光器

Self-Q-switched Yb3 All-fiber Laser Based on Fiber Interferometer

摘要:

对基于光纤干涉环的包层泵浦全光纤自调Q激光器进行了实验研究。实验采用掺Yb^3 双包层光纤(DCF)为增益介质，光纤Bragg光栅(FBG)作为腔镜，以及接入5m普通单模光纤的光纤干涉环，实现了较稳定的全光纤自调Q激光器，获得了脉宽3．6ns，重复频率约1kHz，峰值功率56．7kW的光脉冲。提出其产生ns脉冲的原因是瑞利散射(RS)与受激布里渊散射(SBS)的共同作用。

Abstract:

Yb~(3+) double-clad fiber(PCF) was used as gain medium,whose one end is successfully jointed to a fiber Bragg grating(FBG),and the other end is then sealed to a fiber interferometer that has 5 m single mode fiber.The pulses,whose pulse width is 3.6 ns,peak power is 56.7 kW and repetition rate is about 1 kHz,were obtained realized,then stable self-Q-switched all-fiber laser was realized.We pointed out first that the co-operation of Rayleigh scattering(RS) and stimulated Brillouin scattering(SBS) lead to obtain ns pulses from the double-clad self-Q-switching all-fiber laser.