摘要
基于光纤与板条结合的主振荡功率放大器(MOPA)结构,以单模光纤激光器作为种子源,对Yb∶YAG表层增益板条进行功率放大。对单程及双程两种提取方式进行理论计算及实验研究,结果表明:在室温下,获得了1030 nm激光输出;当注入种子光功率为200 W,抽运光功率为11.2 kW时,单、双程放大输出功率分别为1.6 kW和2.6 kW,光-光转换效率分别为12.8%和21.4%;测得Yb∶YAG表层增益板条的透射波前畸变为1.3μm;Yb∶YAG表层增益板条具有作为高功率激光器增益介质的潜力。
A novel Yb： YAG surface gain slab laser amplifier is designed, with a fiber laser seed, using the geometry of master oscillator power amplifier （MOPA）. Single-pass and double-pass amplifying are investigated theoretically and experimentally. The results show that 1030 nm laser output is obtained at room temperature. Under the conditions that the total pumping power is 11.2 kW and the injected power of fiber seed laser is 200 W, the output power of single and double pass amplified laser are 1.6 kW and 2.6 kW, respectively, and the optical efficiency of the two methods are 12.8% and 21.4%, respectively. The transmission wavefront of Yb： YAG surface gain slab is measured and the wavefront distortion value is 1.3 μm. Yb：YAG surface gain slabs have the potential as gain medium of high power lasers.
作者
李宁
张伟桥
刘洋
唐晓军
Li Ning;Zhang Weiqiao;Liu Yang;Tang Xiaojun(Science and Technology on Solid-State Lasers Laboratory,North China Research Institute of Electro-Optics,Beijing 100015,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2018年第11期17-21,共5页
Chinese Journal of Lasers
