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Low quantum defect laser performance

机译：低量子缺陷激光器性能

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Low quantum defect lasers are possible using near-resonant optical pumping. This paper examines the laser material performance as the quantum defect of the laser is reduced. A steady-state model is developed, which incorporates the relevant physical processes in these materials and predicts extraction efficiency and waste heat generation. As the laser quantum defect is reduced below a few percent, the impact of fluorescence cooling must be included in the analysis. The special case of a net zero quantum defect laser is examined in detail. This condition, referred to as the radiation balance laser (RBL), is shown to provide two orders of magnitude lower heat generation at the cost of roughly 10% loss in extraction efficiency. Numerical examples are presented with the host materials Yb:YAG and Yb:Silica. The general conditions, which yield optimal laser efficiency, are derived and explored.
机译：使用近谐振光学泵浦可以进行低量子缺陷激光器。本文研究了激光材料性能，因为激光的量子缺陷降低。开发了稳态模型，该模型包括这些材料中的相关物理过程，并预测提取效率和废热发电。随着激光量子缺陷减少到少量百分比以下，荧光冷却的影响必须包括在分析中。详细检查了净零量子缺陷激光器的特殊情况。该条件称为辐射平衡激光（RBL），显示为在提取效率的大约10％的成本下提供两个较低的发热次数。用宿主材料Yb：YAG和Yb：二氧化硅提出数值实例。衍生和探索产生最佳激光效率的一般条件。

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