Chinese Optics Letters, 2016, 14 (8): 081601, Published Online: Aug. 4, 2016
High-efficiency ~2 μm laser in a single-mode Tm-doped lead germanate composite fiber Download: 594次
Abstract
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 cm-long lead germanate fiber as the gain medium, a 33 mW 1942 nm Tm laser is also demonstrated.
Peiwen Kuan, Xiaokang Fan, Wentao Li, Xueqiang Liu, Chunlei Yu, Lei Zhang, Lili Hu. High-efficiency ~2 μm laser in a single-mode Tm-doped lead germanate composite fiber[J]. Chinese Optics Letters, 2016, 14(8): 081601.