Modulation of the resonance frequency in double-split ring terahertz metamaterials

被引：6

作者：

Li, Qingmei ^{[1
]}

Zhang, Bo ^{[1
]}

Xiong, Wei ^{[2
]}

Shen, Jingling ^{[1
]}

机构：

[1] Capital Normal Univ, Dept Phys, Minist Educ, Beijing Key Lab Terahertz Spect & Imaging,Key Lab, Beijing 100048, Peoples R China

[2] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2014年 / 323卷

关键词：

Spectroscopy; Terahertz; Metamaterials; OPTICAL-ACTIVITY;

D O I：

10.1016/j.optcom.2014.03.007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigated the resonant transmission of planar metamaterials structured in symmetric and asymmetric double-split rings through simulations and experiments. With increasing of the arm lengths the transmission dips coming from the LC resonance red-shift by 50-100 GHz. In addition to the LC resonance, dipole resonance occurs in the asymmetric structure which is formed by displacing the two splits away from the center in the same direction. Sensing characteristics by changes in the media surrounding the structures were demonstrated by simulations and experiments. By changing the surrounding medium from air to oil, we obtained resonant frequency red-shifts of 30-80 GHz. This study may lead to the application of these terahertz devices as modulators and sensors. (C) 2014 Elsevier B.V. All rights reservecl

引用

页码：162 / 166

页数：5

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