CdS晶体中2 LO声子共振超拉曼散射的理论分析

Pub Date : 2023-11-24 DOI:10.1007/s10946-023-10169-z

Ludmila E. Semenova

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引用次数: 0

摘要

从理论上研究了纤锌矿结构的CdS晶体中2个LO声子对光的共振超拉曼散射。考虑了双光子偶极子跃迁到s型B和C激子的散射过程。考虑了中间状态的不同序列。结果表明，在一定条件下，包含可能的偶极子跃迁到更深的价带，可以对散射截面的频率依赖性产生显著影响。

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Theoretical Analysis of Resonant Hyper-Raman Scattering of Light by 2 LO Phonons in a CdS Crystal

We theoretically study resonant hyper-Raman scattering of light by 2 LO phonons in a CdS crystal with the wurtzite structure. The scattering process involving the two-photon dipole transitions to B and C excitons of the s-type is considered. The different sequences of intermediate states are taken into account. It is shown that the inclusion of the possible dipole transitions to the deeper valence band, at certain conditions, can have a noticeable effect on the frequency dependence of the scattering cross section.

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