双折射晶体中旋光效应的耦合波理论

与传统的旋光效应理论不同，采用三阶赝张量κ⁽²⁾_jkl描述旋光现象，并将相关的电极化强度作微扰处理，直接从Maxwell方程组出发推导出了双折射晶体中自然旋光效应的耦合波方程组并得到解析解.该解析解包含了已有的旋光效应宏观理论结果，可方便地用于描述任意偏振态的单色光波在任意点群的双折射旋光晶体中沿任意方向的传播行为.最后，以石英晶体为例,通过对出射光波的偏振态分析，研究了波矢失配对旋光效应的影响. 关键词： 耦合波理论 旋光效应 非线性光学

Wave coupling theory of optical activity in birefringent crystal

Different from the traditional treatment, we use the third-order tensor κ⁽²⁾_jkl to describe the optical activity and take the corresponding polarization as a perturbation, and directly derive a wave coupling equation for the phenomenon from Maxwell's equations. The analytic solution of the coupling equation, which involves the results from the previous macroscopic theory of optical activity, describing the propagation of monochromatic light in arbitrary polarization state traveling in any direction in an optical active crystal belonging to any point group, is given in this paper. Finally, as an application of this theory, the influence of the wave-vector mismatch on the optical rotation in quartz crystal is studied in detail by analyzing the polarization state of the output light.