以文献［5］在偶极近似与旋转波近似下导出的哈密顿算符(Hamiltonian)为基础, 并以单模光频支声子与单模光场构成的共振耦合系统为简化模型, 取得该耦合系统相互作用能谱的比较严格的解析解, 同时还发现一种起源于声子-声子耦合的真空(能级)平移效应。 可以预期, 本文所研究的能谱将是有关晶体物质结构的又一种信息源。

On the basis of Hamiltonian derived in the references <参考文献原文>under the dipole and rotating-wave approximations, the energy spectrum of ionic-crystal lattice vibration anharmonicly in lightfield is discussed. The energy level as the total number n of photons and optic phonons with the same mode-frequency splits up into sublevels via the photon-phonon and phonon-phonon coupling, which would be a kind of dynamical (A.C.) Stark effect. We found a purely quantum effect: the n=0 (vacuum) level is shifted by the interaction between phonons themselfs. It is expected that spectrum calculated might be another resource of information for crystal structure.