Voigt waves in bianisotropic materials

Voigt波传播代表了由某些各向异性电介质材料支持的电磁平面波传播的不寻常形式。它可以区别于平面波传播的通常形式，如在电磁学和光学的标准教科书中遇到的，基于振幅衰减率。也就是说，Voigt波的衰减表现出对传播距离的线性依赖性，而在平面波传播的通常情况下，存在与传播距离的指数衰减。双各向异性材料比各向异性材料提供更大的Voigt波传播范围，因为电场和磁场之间的内在耦合以及与双各向异性材料相关的更大的本构参数空间。Voigt波传播的条件将导出某些类型的物理可实现的双各向异性材料。这些双各向异性材料将采用工程材料的形式，这些材料是由相对简单的组分材料均匀化而产生的，这些材料本身可能不支持Voigt波传播。此外，控制的方向，其中福格特波传播的方式施加直流电场的前景将调查某些双各向异性材料所产生的电光元件材料。利用双各向异性材料中的Voigt波的光学传感应用的前景也将进行研究。此外，实现Voigt波的振幅与传播距离呈现线性增益的前景将被调查的某些双各向异性材料所产生的活性成分材料。

Voigt-wave propagation represents an unusual form of electromagnetic plane-wave propagation that is supported by certain anisotropic dielectric materials. It may be distinguished from the usual form of plane-wave propagation, as encountered in standard textbooks on electromagnetics and optics, on the basis of rate of amplitude decay. That is, the decay of Voigt waves exhibits a linear dependency on propagation distance whereas in the usual case of plane-wave propagation there is exponential decay with propagation distance. Bianisotropic materials offer much greater scope for Voigt-wave propagation than do anisotropic materials, because of the intrinsic coupling between electric and magnetic fields and the much larger constitutive parameter space that is associated with bianisotropic materials. Conditions for Voigt-wave propagation will be derived for certain types of physically-realizable bianisotropic materials. These bianisotropic materials will take the form of engineered materials that arise from the homogenization of relatively simple component materials that may not themselves support Voigt-wave propagation. Furthermore, the prospects of controlling the directions in which Voigt waves propagate by means of an applied DC electric field will be investigated for certain bianisotropic materials arising from electro-optic component materials. The prospects of harnessing Voigt waves in bianisotropic materials for optical sensing application will also be investigated. In addition, the prospects of realizing Voigt waves which exhibit a linear gain in amplitude with propagation distance will be investigated for certain bianisotropic materials arising from active component materials.