光纤饱和吸收体掺镱全光纤化激光器  

Yb-doped all-fiber laser based on fiber saturable absorber

作　　者：祖嘉琦 武帅 张海涛[1] 耿东晛 卢姁 Zu Jiaqi;Wu Shuai;Zhang Haitao;Geng Dongxian;Lu Xu(Center for Photonics and Electronics,Department of Precision Instruments,Tsinghua University,Beijing 100084,China;5111 mailbox,Beijing 100094,China;Scientific Equipments Company of Sichuan Province,Chengdu 610023,China;32021 Force,Beijing 100094,China)

机构地区：[1]清华大学精密仪器系激光与光子技术研究室,北京100084 [2]5111信箱,北京100094 [3]四川省科学器材有限公司,四川成都610023 [4]32021部队,北京100094

出　　处：《红外与激光工程》2020年第6期143-148,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(61475081);四川省科技计划资助(2018JZ0015)。

摘　　要：报道了一种基于光纤饱和吸收体的掺镱全光纤调Q激光器,为了获得较高峰值功率较窄脉宽的激光脉冲输出,利用掺镱光纤的可饱和吸收效应,以20/130μm规格的大模场双包层掺镱光纤作为增益光纤,以10/130μm规格的单模双包层掺镱光纤作为可饱和吸收体来实现被动调Q。该激光器采用全光纤化的结构,结构紧凑,以较低的成本获得了较为高效的脉冲输出。最终获得了平均功率最高为3W,直线效率约为30%,重复频率为10~100 kHz可调,脉宽最窄为344 ns,光谱宽度为0.05 nm、中心波长为1064 nm的激光输出。An Yb-doped all-fiber Q-switched laser based on fiber saturable absorber was reported.In order to obtain laser pulses output with a higher peak power and a narrower pulse width,the saturable absorption effect of Ytterbium-doped fiber was used with laser.The 20/130μm large mode double cladding Yb-doped fiber was used as the gain fiber.The 10/130μm single mode double cladding Yb-doped fiber was used as saturable absorber.The laser adopted a all fiber-optic structure,and a relatively stable pulse output was obtained at a relatively low cost.The maximum average power was 3 W,the slope efficiency was 30%,the repetition rate was 10–100 kHz,and the minimum pulse duration was 344 ns with the spectral width of 0.05 nm and the central wavelength of 1064 nm.

关 键 词：激光技术 激光器 光纤激光 脉冲激光 光纤可饱和吸收体 

分 类 号：TN248[电子电信—物理电子学]