6.1 kW CW laser amplifier chain based on Yb:YAG surface-doped slab  

作　　者：ZHANG Wei-qiao LIU Yang CHEN Nian-jiang DING Xiao-kang TANG Xiao-jun XIE Gui-juan 张伟桥;刘洋;陈念江;丁小康;唐晓军;谢桂娟(Science and Technology on Solid-State Laser Key Laboratory,Institute of North Optical and Electronics,Beijing 100015,China)

机构地区：[1]Science and Technology on Solid-State Laser Key Laboratory,Institute of North Optical and Electronics,Beijing 100015,China

出　　处：《Optoelectronics Letters》2020年第1期21-24,共4页光电子快报（英文版）

基　　金：supported by the Key Laboratory of Science and Technology for National Defence on Solid-state Laser(No.614240401010117)。

摘　　要：In this paper, we present a diode-pump continuous wave laser amplifier chain where master the oscillator power amplifier(MOPA) architecture is used. The laser amplifier chain consists of two Yb:YAG surface-doped slab laser modules and the 1030 nm fiber laser is used as seed. We theoretically calculate the conditions for obtaining high output l aser power and systematically analyze the advantages of surface-doped slab. The maximum output power is 6.1 kW and the optical to optical conversion efficiency is 27% when the pump power is 22 kW at room temperature. The beam quality(β) is 2.8 times diffraction limit. These results demonstrate that the surface-doped slab structure has the potential to obtain high output laser power.

关 键 词：YB:YAG AMPLIFIER temperature. 

分 类 号：TN722[电子电信—电路与系统]