Observation of Fano resonance and classical analog of electromagnetically induced transparency in toroidal metamaterials

被引：50

作者：

Han, Song ^{[1
]}

Cong, Lonqing ^{[2
,3
]}

Gao, Fei ^{[2
]}

Singh, Ranjan ^{[2
,3
]}

Yang, Helin ^{[1
]}

机构：

[1] Cent China Normal Univ, Coll phys Sci & technol, Wuhan 430079, Peoples R China

[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[3] Nanyang Technol Univ, Sch Phys & Math Sci, Ctr Disrupt Photon Technol, Singapore 637371, Singapore

来源：

ANNALEN DER PHYSIK | 2016年 / 528卷 / 05期

基金：

中国国家自然科学基金;

关键词：

toroidal moments; Fano resonance; electromagnetically induced transparency; 3D metamaterial; PARITY NONCONSERVATION; ANAPOLE MOMENT; VIOLATION; PHYSICS; CESIUM;

D O I：

10.1002/andp.201600016

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Toroidal multipoles have recently been explored in various scientific communities, ranging from atomic and molecular physics, electrodynamics, and solid-state physics to biology. Here we experimentally and numerically demonstrate a three-dimensionsal toroidal metamaterial where two different toroidal dipoles along orthogonal directions have been observed. The chosen toroidal metamaterial also simultaneously supports Fano resonance and the classical analog of electromagnetically induced transparency (EIT) phenomena in the transmission spectra that originate from the electric toroidal dipole and electric-magnetic dipole destructive interference. The intriguing properties of the toroidal resonances may open up avenues for applications in toroidal moments generator, sensing and slow-light devices.

引用

页码：352 / 357

页数：6

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