结构手征材料斜激发时圆布拉格现象的电控显示理论
Theory of electrically controlled exhibition of circular Bragg phenomenon by an obliquely excited structurally chiral material
摘要：
本文用4 × 4矩阵常微分方程描述了平面波在电光结构手征材料（SCM）平板上的反射和透射的边值问题。SCM板可以局部赋予20种点群对称性中的一种，并在其厚度上承受直流电压。通过施加直流电压来增强（以及在某些情况下产生）圆布拉格现象（CBP）在光学中具有开关或圆偏振抑制应用。薄过滤器和CBP的电操作的孪生可能性，取决于当地的晶体学类以及SCM的本构参数，出现。
英文摘要：
The boundary-value problem of the reflection and transmission of a plane wave due to a slab of an electro-optic structurally chiral material (SCM) is formulated in terms of a 4x4 matrix ordinary differential equation. The SCM slab can be locally endowed with one of 20 classes of point group symmetry, and is subjected to a dc voltage across its thickness. The enhancement (and, in some cases, the production) of the circular Bragg phenomenon (CBP) by the application of the dc voltage has either switching or circular-polarization-rejection applications in optics. The twin possibilities of thinner filters and electrical manipulation of the CBP, depending on the local crystallographic class as well as the constitutive parameters of the SCM, emerge.
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