Negative refractive index in chiral spiral metamaterials at terahertz frequencies

被引：17
|
作者：
He, Mingxia [1 ,2 ]
Han, Jiaguang [1 ,2 ,3 ]
Tian, Zhen [1 ,2 ]
Gu, Jianqiang [1 ,2 ]
Xing, Qirong [1 ,2 ]
机构：
[1] Tianjin Univ, Ctr Terahertz waves, Tianjin, Peoples R China
[2] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin, Peoples R China
[3] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore
来源：
OPTIK | 2011年 / 122卷 / 18期
关键词：
Chiral metamaterial; Terahertz frequency; Negative refractive index;
D O I：
10.1016/j.ijleo.2010.10.024
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A three-dimensional chiral metamaterial consisting of arrays of the multi-layered mutually twisted metallic spirals is proposed. We theoretically demonstrate such a chiral spiral structure exhibiting negative refractive index at terahertz frequencies. The chirality with varied refractive index can be obtained by change of configurations of the structure. The presented design offers flexibility for investigation of electromagnetic properties of chiral metamaterials in the terahertz regime and thus leads to a unique route to terahertz device applications. (C) 2010 Elsevier GmbH. All rights reserved.
引用
收藏
页码：1676 / 1679
页数：4
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