用棒管法拉制了Tm3+/Ho3+掺杂的碲酸盐微结构光纤, 并获得了2 μm的激光输出。以1 560 nm的Er3+掺杂石英光纤激光器作为泵浦源, 在22 cm长的微结构光纤中, 得到了最大功率为8.34 mW、波长为2 065 nm的连续激光输出, 泵浦光功率为507 mW, 斜率效率为2.97%。研究结果表明, Tm3+/Ho3+共掺碲酸盐微结构光纤是一种用于研制2 μm激光器的理想材料。

The lasing performances of Tm3+/Ho3+ co-doped tellurite microstructure fibers were reported. The microstructure fibers were fabricated by using a rod-in-tube method. Pumped by an Er3+ doped silica fiber laser operating at 1 560 nm, a continuous wave output power of ~8.34 mW at 2 065 nm was obtained from 22 cm long microstructure fiber. The slope efficiency of the microstructure fiber laser was 2.29% with an absorbed pump power of 507 mW. The results indicate that the Tm3+/Ho3+ doped tellurite microstructure fiber is a promising gain medium for constructing compact 2 μm fiber lasers.