材料科学
光纤激光器
光电子学
兴奋剂
波长
激光器
光抽运
红外线的
光纤
掺铒光纤放大器
光学
光放大器
物理
作者
Junxiang Zhang,Shijie Fu,Quan Sheng,Wenxin Xia,Lu Zhang,Wei Shi,Jianquan Yao
摘要
In this work, we demonstrated that a single pump source in the 1.57-1.72 μm band can enable mid-infrared 2.8 μm lasing in Er-doped fluoride fiber via ground state absorption and excited-state absorption. The efficiency evolution of 2.8-μm fiber lasers with respect to pump wavelength was experimentally investigated. The high slope efficiency of ⪆50% and low laser threshold of ⪅0.1 W have been achieved with optimized fiber doping concentration and pump wavelength. This pioneer work paves the way for the further power scaling of mid-infrared 3 μm Er fiber lasers pumped by near-infrared fiber lasers.
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