High-efficiency^2μm laser in a single-mode Tm-doped lead germanate composite fiber  

作　　者：关珮雯 范小康 李文涛 刘雪强 于春雷 张磊 胡丽丽 

机构地区：[1]Key Laboratory of Materials for High Power Laser,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China [2]University of Chinese Academy of Sciences,Beijing 100039,China [3]Wuhan Optics Valley Aerospace Sanjiang Laser Industrial Technology Research Institute Co.Ltd.,Wuhan 430000,China

出　　处：《Chinese Optics Letters》2016年第8期72-75,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61308084);the Natural Science Foundation of Shanghai(No.15ZR1444800);the Youth Innovation Promotion Association of the Chinese Academy of Sciences

摘　　要：A highly Tm-doped lead germanate glass fiber is developed using the rod-in-tube method. The -2 μm laser beam quality of the fiber is -1.5. The lead germanate composite fiber jumpers are homemade for all the fiber laser investigations. When core is pumped by a 1590 nm Yb/Er fiber laser, a maximum laser output of 313 mW is achieved at a 670 mW pump power, and the corresponding slope efficiency is -52.8%. Moreover, by using a 2 cmlong lead germanate fiber as the gain medium, a 33 mW 1942 nm Tm laser is also demonstrated.A highly Tm-doped lead germanate glass fiber is developed using the rod-in-tube method. The -2 μm laser beam quality of the fiber is -1.5. The lead germanate composite fiber jumpers are homemade for all the fiber laser investigations. When core is pumped by a 1590 nm Yb/Er fiber laser, a maximum laser output of 313 mW is achieved at a 670 mW pump power, and the corresponding slope efficiency is -52.8%. Moreover, by using a 2 cmlong lead germanate fiber as the gain medium, a 33 mW 1942 nm Tm laser is also demonstrated.

关 键 词：pumped glasses cladding silica lasing mirror lifetime repetition spatially absorbed 

分 类 号：TN248[电子电信—物理电子学]