Polarization independent and tunable plasmon induced transparency for slow light

被引：10

作者：

Yang, Hanning ^{[1
,2
]}

Owiti, Edgar ^{[1
,2
]}

Pei, Yanbo ^{[1
,2
]}

Li, Siren ^{[1
,2
]}

Liu, Peng ^{[1
,2
]}

Sun, Xiudong ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Key Lab Microopt & Photon Technol Heilongjian, Harbin 150001, Peoples R China

来源：

RSC ADVANCES | 2017年 / 7卷 / 31期

基金：

中国国家自然科学基金;

关键词：

ELECTROMAGNETICALLY INDUCED TRANSPARENCY; ACTIVE CONTROL; METAMATERIALS; ANALOG; NANOPRISMS; RESONANCE; INDEX; NANOSTRUCTURES; METASURFACES; REFRACTION;

D O I：

10.1039/c7ra00672a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel metamaterial composed of a Ag nanoprism periodic tetramer is proposed in this paper. The metamaterial has high structural symmetry and shows polarization independent plasmon-induced transparency (PIT), demonstrated through simulation based on a finite element method. Resonant wavelength and transmissivity of the transparency window is flexibly tuned by changing the fillet radius, the edge length, and the thickness of the Ag nanoprisms. A slow-light effect, caused by an adjustable PIT with a special line shape, can also be flexibly manipulated as the nanoprisms are filleted. The maximum group index value of the metamaterial ranges from 71 to 225. The effects show potential for application in novel plasmonic environmental sensors and slow-light devices.

引用

页码：19169 / 19173

页数：5

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