振动超辐射理论
On the Theory of Vibronic Superradiance
摘要：
研究了杂质晶体振动跃迁的Dicke超辐射。结果表明，超辐射参数超辐射脉冲的持续时间和强度以及延迟时间取决于电子态与分子内杂质振动的耦合强度（负责光谱的振动结构，以纯电子线的振动复制品的形式）和晶体温度通过德拜-晶格振动的沃勒因子。的时间延迟的比率，以及不同的振动跃迁的超辐射脉冲强度的理论估计与实验观察的结果在极性电介质KCl：O2-的双色超辐射。此外，该理论定性地正确描述了超辐射效应的临界温度依赖关系。
英文摘要：
The Dicke superradiance on vibronic transitions of impurity crystals is considered. It is shown that parameters of the superradiance (duration and intensity of the superradiance pulse and delay times) on each vibronic transition depend on the strength of coupling of electronic states with the intramolecular impurity vibration (responsible for the vibronic structure of the optical spectrum in the form of vibrational replicas of the pure electronic line) and on the crystal temperature through the Debye-Waller factor of the lattice vibrations. Theoretical estimates of the ratios of the time delays, as well as of the superradiance pulse intensities for different vibronic transitions well agree with the results of experimental observations of two-color superradiance in the polar dielectric KCl:O2-. In addition, the theory describes qualitatively correctly the critical temperature dependence of the superradiance effect.
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