线形腔半导体可饱和吸收镜被动锁模掺镱光纤激光器  

Ytterbium-Doped Fiber Laser Passively Mode-Locked byan Semiconductor Saturable Absorber Mirror in Linear Cavity

作　　者：宋锐[1] 侯静[1] 王彦斌[2] 靳爱军[1] 陆启生[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院 [2]中国人民解放军63892部队

出　　处：《中国激光》2014年第1期30-36,共7页Chinese Journal of Lasers

基　　金：国家自然科学基金(61077076);湖南省杰出青年基金项目(12JJ1010);湖南省研究生科研创新项目;国防科技大学优秀研究生创新资助(B120701)

摘　　要：皮秒脉冲在超连续谱光源中具有重要应用,基于线形腔搭建了半导体可饱和吸收镜(SESAM)被动锁模皮秒脉冲掺镱光纤激光器,详细分析对比了激光器中所用光纤光栅的反射率、反射带宽以及SESAM的宏观特性参数对锁模激光器输出脉冲特性的影响。实验结果表明:选择10%反射率和0.3nm反射带宽的光纤光栅比较有利于激光器的稳定锁模;光纤激光器对SESAM参数的适用范围比较大,SESAM的非饱和损耗对激光器输出平均功率影响较大,SESAM的非饱和损耗越小,激光器输出脉冲的平均功率越高。Picosecond pulses have an important application in supercontinuum sources. A picosecond ytterbium-doped fiber laser passively mode-locked by an semiconductor saturable absorber mirror （SESAM） in linear cavity is constructed, and the effects of the reflectivity as well as the bandwidth of the fiber Bragg grating and the parameters of the SESAM on the characteristics of the output pulse are analyzed in detail and compared with each other. The experimental results show that a fiber Bragg grating with 10 % reflectivity and 0.3 nm reflection bandwidth is more profitable for the mode-locking stability of the fiber laser, and the fiber laser has a wide working range for the parameters of the SESAM. In addition, the non-saturable loss of the SESAM has an important influence on the average output power of the fiber laser, and a smaller value of non- saturable loss results in higher output power for the laser.

关 键 词：激光器 光纤激光器 被动锁模 半导体可饱和吸收镜 光纤光栅 

分 类 号：TN248[电子电信—物理电子学]