Shen M, Furniss D, Tang Z, Barny E, Sojka L, Sujecki S, Benson T M, Seddon A B
Opt Express. 2018 Sep 3;26(18):23641-23660. doi: 10.1364/OE.26.023641.
We propose a model for resonantly pumped Pr-doped chalcogenide fiber amplifiers, which includes excited state absorption and the full spectral amplified spontaneous emission spanning from 2 μm to 6 μm. Based on this model, the observed near- and mid-infrared photoluminescence generated from Pr-doped chalcogenide fiber is explained. Then the output properties of a 4.1 μm resonantly pumped Pr-doped chalcogenide fiber amplifier are simulated in both co- and counter-pumping schemes. Results show that the 4.1 μm counter-pumped fiber amplifier can achieve a power conversion efficiency (PCE) of over 62.8% for signal wavelengths ranging from 4.5 μm to 5.3 μm. This is, to our best knowledge, the highest simulated PCE for a Pr-doped chalcogenide fiber amplifier.
我们提出了一种用于共振泵浦掺镨硫族化物光纤放大器的模型，该模型包括激发态吸收以及从2μm到6μm的全光谱放大自发辐射。基于此模型，解释了掺镨硫族化物光纤产生的近红外和中红外光致发光现象。然后，在同向泵浦和反向泵浦方案中对4.1μm共振泵浦掺镨硫族化物光纤放大器的输出特性进行了模拟。结果表明，对于4.5μm至5.3μm的信号波长，4.1μm反向泵浦光纤放大器可实现超过62.8%的功率转换效率（PCE）。据我们所知，这是掺镨硫族化物光纤放大器模拟得到的最高PCE。
