Diode pumped visible Dy3+-doped silica fiber laser: Ge-co-doping effects on lasing efficiency and photodarkening
Diode pumped visible Dy3+-doped silica fiber laser: Ge-co-doping effects on lasing efficiency and photodarkening
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DOI：
10.35848/1882-0786/ac3d1d
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发表时间：
2021-11
影响因子：
2.3
通讯作者：
T. Okazaki;C. Otsuka;E. H. Sekiya;Kota Kawai;M. Mizusaki;Yuta Kanbayashi;K. Saito
中科院分区：
文献类型：
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作者：
T. Okazaki;C. Otsuka;E. H. Sekiya;Kota Kawai;M. Mizusaki;Yuta Kanbayashi;K. Saito
我们提出了第一个演示的可见激光振荡的Dy 3+掺杂的石英光纤由451 nm的InGaN激光二极管泵浦。发现Ge共掺杂对激光振荡有以下重要作用：（1）降低瑞利散射损耗，（2）抑制X射线和泵浦光致光暗化（PD），（3）提高激光斜率效率。在Dy含量为0.46wt%，Ge含量为1.8wt%，Al含量为0.54wt%，582.5nm处的斜率效率为22.0%，最大输出功率为18.4mW。
We present the first demonstration of visible laser oscillation in the Dy3+-doped silica fiber pumped by a 451 nm InGaN laser diode. It was found that Ge-co-doping plays the following important roles of laser oscillation: (1) to reduce the Rayleigh scattering loss, (2) to suppress the X-ray-induced and pump-induced photodarkening (PD), and (3) to increase lasing slope efficiency. In a fiber with 0.46 wt% Dy, 1.8 wt% Ge, and 0.54 wt% Al, the slope efficiency is 22.0% at 582.5 nm, and the maximum output power is 18.4 mW.