由于各向同性手征层引起的周期性多层叠层特性的光谱位移
Spectral shifts in the properties of a periodic multilayered stack due to isotropic chiral layers
摘要：
研究了含有各向同性手征层的周期性多层叠层的正则问题，将其均匀化为单轴双各向异性介质，并推导了其有效本构参数。当其单胞由金属层和各向同性手征层组成时，叠层表现出共振行为。各向同性的手性的存在下，可以导致在谐振频率的手征参数的合理的大值的小的移位，这意味着可以切换的有效介电常数的符号。介电性质的这种光谱偏移可能对光谱目的有用。
英文摘要：
Investigating the canonical problem of a periodic multilayered stack containing isotropic chiral layers, we homogenized it as a uniaxial bianisotropic medium and derived its effective constitutive parameters. The stack shows a resonant behavior, when its unit cell consists of a metallic layer and an isotropic chiral layer. The presence of isotropic chirality can result in small shifts of the resonance frequency for reasonably large values of the chirality parameter, implying that the sign of an effective permittivity can be switched. Such spectral shifts in the dielectric properties can be potentially useful for spectroscopic purposes.
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