基于零折射率材料的纳米光束发生器设计与仿真

Özgür Eriş, Tutku Abanuzoğlu, Ö. Ergül
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引用次数: 0

摘要

我们设计和计算分析了近零折射率(NZI)结构,该结构在各向同性光源的内部激发下充当纳米光束发生器。设计的结构具有均匀化的外壳几何形状,经过各种修改,可以产生不对称的三向、双向和单向梁,以及对称梁。NZI特性使得从平面产生光束成为可能,而数值结果表明,壳的行为对几何参数和NZI的性质(即介电常数和磁导率值)非常敏感。我们表明,通过使用不对称腔和金字塔纹理,可以产生具有适当尺寸和材料特性选择的不对称光束。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design and Simulation of Nana-Optical Beam Generators Based on Zero-Index Materials
We present design and computational analysis of near-zero-index (NZI) structures that act as nano-optical beam generators when excited internally by isotropic sources. The designed structures have homogenized shell geometries with various modifications to generate asymmetric tridirectional, bidirectional, and unidirectional beams, in addition to symmetric ones. NZI properties make it possible to generate beams from planar surfaces, while numerical results show that the behavior of a shell is very sensitive to the geometric parameters and the nature of the NZI, i.e., permittivity and permeability values. We show that, by using asymmetric cavities and pyramidal textures, it is possible to generate asymmetric beams with suitable choices of dimensions and material properties.
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