Opt Express. 2023 Feb 13;31(4):6690-6703. doi: 10.1364/OE.483808.
An empirical TMI threshold formula is derived based on a recently developed model and used to analyze the power-scaling performance of ytterbium-doped silica glass and YAG (YAlO) and lutetia (LuO) single-crystalline fiber amplifiers. Overall, the single-crystalline fiber lasers are found to scale potentially to higher average powers due to their higher thermal conductivities compared to silica glass. This work serves as a useful extension to earlier works and shines significant new light on optimal fiber and amplifier designs for maximum average output power with TMI considered.
基于最近开发的模型，推导出一个经验 TMI 阈值公式，并用于分析掺镱石英玻璃和 YAG（YAlO）及 LuO（LuO）单晶光纤放大器的功率缩放性能。总体而言，由于单晶光纤的热导率高于石英玻璃，因此有望实现更高的平均功率。这项工作是对早期工作的有益扩展，并为在考虑 TMI 的情况下获得最大平均输出功率的最佳光纤和放大器设计提供了重要的新启示。
