摘要
通过研究单分子－光子泵发生光跃迁时的声子参与频度，热－光转换效率以及 制冷效率，从理论上描述了单分子－光子泵的热力学行为。利用热分布次数作为热分布时间 的衡量尺度，研究了单分子－光子泵的制冷效率。得出了与其它研究者的实验曲线符合很好 的理论计算结果。与包含有很多的制冷中心的大块材料不同，一个发光中心作为单分子－光 子泵时，对其激发的最佳彼长处于吸收带的中心而不是边上。因此吸收系数会大大增加。
The thermodynamic action of Single Molecule-Photon Cryocooler was described by investigating the frequency of phonons taking part in light transitions, heat-light converting efficiency and cooling efficiency. The times of heat distribution was taken as time scale in investigating cooling efficiency. The result of cooling efficiency from our theory is accorded well with experiment curves obtained by other researchers. It is different to bulk material which include of many cooling centers that the best exciting wavelength for Single MoleculePhoton Cryocooler sits at the center of absorbing band. The absorption to pump light will be stronger for Single Molecule-Photon Cryocooler than bulk material.
出处
《光电子技术与信息》
CAS
2001年第3期6-13,共8页
Optoelectronic Technology & Information
基金
国家重点基础研究发展规划(973.稀土G1998061320)
中国科学院重点基金
国家自然科学基金(59872042
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