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Thermodynamics of radiation-balanced lasing

机译:辐射平衡激光的热力学

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摘要

Athermal lasers dispose of their waste heat in the form of spontaneous fluorescence (i.e., by laser cooling) to avoid warming the medium. The thermodynamics of this process is discussed both qualitatively and quantitatively from the point of view of the first and second laws. The steady-state optical dynamics of an ytterbium-doped KGd(WO4)(2) fiber is analyzed as a model radiation-balanced solid-state laser. A Carnot efficiency for all-optical amplification is derived in terms of the energy and entropy transported by the pump, fluorescence, and laser beams. This efficiency is compared with the performance of the model system. (C) 2003 Optical Society of America. [References: 28]
机译:无热激光器以自发荧光的形式(即通过激光冷却)处置其废热,以避免加热介质。从第一定律和第二定律的角度定性和定​​量地讨论了该过程的热力学。作为模型辐射平衡固态激光器,分析了掺-的KGd(WO4)(2)光纤的稳态光学动力学。根据泵浦,荧光和激光束传输的能量和熵,得出了全光放大的卡诺效率。将该效率与模型系统的性能进行比较。 (C)2003年美国眼镜学会。 [参考:28]

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