Isotropic Chiral Materials
Isotropic Chiral Materials
复制标题
各向同性手性材料
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
C. Bohren
中科院分区：
文献类型：
--
作者：
C. Bohren
各向同性手性材料是旋转对称的，但不是镜像对称的。它们显著的光学特性是，只有圆偏振平面波可以在它们中传播（在任何方向）而不改变偏振。一般来说，椭圆偏振平面波的长轴改变方向，称为旋光<e:1>，其短轴与长轴的比例增加。这种材料对于相反旋向的圆极化波具有不同的波数。任意时谐电磁场的方程可以用这样一种形式来表示，即对于线性的、各向同性的非手性材料（如层的反射和透射，粒子的散射）所解决的每一个问题，也可以用于线性的、各向同性的手性材料。
Isotropic chiral materials are rotationally symmetric but not mirror symmetric. Their salient optical property is that only a circularly polarized plane wave can propagate (in any direction) in them without change in polarization. In general, the major axis of an elliptically polarized plane wave changes directionâcalled optical rotationâand its ratio of minor to major axes increases. Such materials have different wavenumbers for circularly polarized waves of opposite handedness. The equations for arbitrary time-harmonic electromagnetic fields can be cast in a form such that every problem that has ever been solved for linear, isotropic achiral materials (such as reflection and transmission by layers, and scattering by particles) can also be solved for linear, isotropic chiral materials.