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 las...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.展开更多
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
文摘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.
