A theoretical study of resonance Raman scattering from molecules. III. Resonance Raman scattering and resonance fluorescence
A theoretical study of resonance Raman scattering from molecules. III. Resonance Raman scattering and resonance fluorescence
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分子共振拉曼散射的理论研究。
DOI：
10.1063/1.441860
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发表时间：
1981
影响因子：
4.4
通讯作者：
S. Lin
中科院分区：
文献类型：
--
作者：
Y. Fujimura;H. Kono;T. Nakajima;S. Lin
考虑到分子系统的多级结构，建立了与热浴相互作用的分子系统中的共振光散射理论。利用Markoff近似中的Liouville算子方法推导了共振光散射过程的截面表达式；横截面由三项组成：共振拉曼散射、共振荧光及其混合。混合项在零振动相移常数的极限内消失。在位移谐振子模型中导出了共振拉曼散射和共振荧光截面的解析表达式。使用导出的表达式进行共振光散射截面中的振动能带结构的模型计算。示出了共振荧光中的带强度分布与共振拉曼散射中的带强度分布的差异。
A theory for the resonance light scattering in a molecular system interacting with the heat bath is developed, taking into account the multilevel structure of the molecular system. An expression for the cross section of the resonance light scattering process is derived by using the Liouville operator method in the Markoff approximation; the cross section consists of three terms: resonance Raman scattering, resonance fluorescence, and their mixing. The mixing term vanishes in the limit of the zero vibrational dephasing constant. Analytical expressions for the resonance Raman scattering and resonance fluorescence cross sections are derived in the displaced harmonic oscillator model. Model calculations of the vibrational band structure in the resonance light scattering cross section are performed by using the expressions derived. Differences of the band intensity distribution in the resonance fluorescence from that in the resonance Raman scattering are illustrated.