标题： 多光子光谱学中有限对称性离子的求和规则 显示英文标题

标题： Sum Rules for Multi-Photon Spectroscopy of Ions in Finite Symmetry

摘要： 描述晶体环境中离子的一光子和二光子跃迁的模型被统一并扩展到宇称允许和宇称禁止的p光子跃迁的情况。 表征偏振依赖性的独立参数的数量被证明取决于一组性质和规则的集合，这些性质和规则结合了对称性考虑和物理模型。 显示英文摘要

摘要： Models describing one- and two-photon transitions for ions in crystalline environments are unified and extended to the case of parity-allowed and parity- forbidden p-photon transitions. The number of independent parameters for characterizing the polarization dependence is shown to depend on an ensemble of properties and rules which combine symmetry considerations and physical models.