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arXiv 2009.04717physics.optics
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异常复合等离子体-极化激元波

Exceptional compound plasmon-polariton waves

Akhlesh Lakhtakia, Chenzhang Zhou, Tom G. Mackay

AI总结:

本文研究三材料结构中复合等离子体-极化激元波的传播,发现当一侧介电材料为各向异性时可在特定方向导引异常CPP波,并通过数值求解边值问题确定了其空间场分布。

摘要:

通常,一种由夹在两种均匀介电材料之间的足够薄的金属膜组成的三材料结构能够导引复合等离子体-极化激元(CPP)波,对于这种波,金属膜两侧的场随距离最近的金属/介电界面的距离呈指数衰减。然而,如果其中一种介电材料是各向异性的,那么该三材料结构可以在特定传播方向上导引异常CPP波。在金属膜被各向异性介电材料占据的一侧,异常CPP波的场按距离最近的金属/介电界面的距离的线性函数与指数函数的乘积衰减。针对CPP波传播的典型边值问题已进行分析并数值求解;由此,建立了单轴介电/金属/各向同性介电结构中异常CPP波的空间场分布。

英文摘要:

Ordinarily, a trimaterial structure comprising a sufficiently thin metal film interposed between two homogeneous dielectric materials guides compound plasmon-polariton (CPP) waves, for which the fields on both sides of the metal film decay exponentially with distance from the nearest metal/dielectric interface. However, if one of the dielectric materials is anisotropic then the trimaterial structure can guide an exceptional CPP wave for a particular propagation direction. On the side of the metal film occupied by the anisotropic dielectric material, the fields of the exceptional CPP wave decay as the product of a linear function and an exponential function of the distance from the nearest metal/dielectric interface. The canonical boundary-value problem for CPP-wave propagation has been analyzed and solved numerically; thereby, the spatial field profiles for exceptional CPP waves for a uniaxial-dielectric/metal/isotropic-dielectric structure have been established.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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