太赫兹超材料各向异性建模：亚波长元胞结构对共振的偏振依赖调控

Anisotropy modeling of terahertz metamaterials: polarization dependent resonance manipulation by meta-atom cluster.

机构信息

1] School of Electronic Engineering, Soongsil University, Seoul 156-743, Korea [2].

1] School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea [2].

出版信息

Sci Rep. 2014 Jun 9;4:5217. doi: 10.1038/srep05217.

DOI:10.1038/srep05217

PMID:24910144

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4048888/

Abstract

Recently metamaterials have inspired worldwide researches due to their exotic properties in transmitting, reflecting, absorbing or refracting specific electromagnetic waves. Most metamaterials are known to have anisotropic properties, but existing anisotropy models are applicable only to a single meta-atom and its properties. Here we propose an anisotropy model for asymmetrical meta-atom clusters and their polarization dependency. The proposed anisotropic meta-atom clusters show a unique resonance property in which their frequencies can be altered for parallel polarization, but fixed to a single resonance frequency for perpendicular polarization. The proposed anisotropic metamaterials are expected to pave the way for novel optical systems.

摘要

最近，由于在传输、反射、吸收或折射特定电磁波方面的奇异特性，超材料激发了全球范围内的研究兴趣。大多数超材料具有各向异性特性，但现有的各向异性模型仅适用于单个超原子及其特性。在这里，我们提出了一种用于非对称超原子簇及其极化相关性的各向异性模型。所提出的各向异性超原子簇表现出独特的共振特性，其频率可以在平行偏振下改变，但在垂直偏振下固定在单个共振频率上。所提出的各向异性超材料有望为新型光学系统铺平道路。