Study of L-shaped resonators at terahertz frequencies

被引：24

作者：

Liu, Jianfeng ^{[1
,2
]}

Zhou, Qingli ^{[1
]}

Shi, Yulei ^{[1
]}

Zhao, Xu ^{[1
]}

Zhang, Cunlin ^{[1
]}

机构：

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

[2] Beijing 55 Middle Sch, Beijing 100027, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 24期

关键词：

METAMATERIAL; PHASE; LIGHT; INDEX; REFLECTION;

D O I：

10.1063/1.4847295

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In experimental and theoretical studies of terahertz subwavelength "L"-shaped structure, we proposed an unusual-mode current resonance responsible for low-frequency characteristic dip in transmission spectra. Comparing spectral properties of our designed simplified structures with that of split-ring resonators, we attribute this unusual mode to the resonance coupling and splitting under the broken symmetry of the structure. Furthermore, it is found that this phenomenon is also related to not only the spacing between horizontal and vertical sides but also their relative position in "L" structure, showing the weakened coupling and spectral splitting with the increased distance and structure symmetry. (C) 2013 AIP Publishing LLC.

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