Sharp Toroidal Resonances in Planar Terahertz Metasurfaces

被引：166

作者：

Gupta, Manoj ^{[1
,2
]}

Savinov, Vassili ^{[3
,4
]}

Xu, Ningning ^{[5
]}

Cong, Longqing ^{[1
,2
]}

Dayal, Govind ^{[1
,2
]}

Wang, Shuang ^{[6
]}

Zhang, Weili ^{[5
]}

Zheludev, Nikolay I. ^{[1
,2
,3
,4
]}

Singh, Ranjan ^{[1
,2
]}

机构：

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

[2] Nanyang Technol Univ, Ctr Disrupt Photon Technol, Photon Inst, Singapore 639798, Singapore

[3] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

[4] Univ Southampton, Ctr Photon Metamat, Southampton SO17 1BJ, Hants, England

[5] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA

[6] Tianjin Univ Technol & Educ, Dept Elect Engn, Tianjin 300222, Peoples R China

来源：

ADVANCED MATERIALS | 2016年 / 28卷 / 37期

基金：

英国工程与自然科学研究理事会;

关键词：

magnetic coupling; metasurfaces; terahertz; toroidal dipoles; high-Q resonances; DIPOLAR RESPONSE; FANO RESONANCES; METAMATERIALS; EXCITATIONS; MOMENTS; INDEX; FIELD;

D O I：

10.1002/adma.201601611

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A toroidal dipole in metasurfaces provides an alternate approach for the excitation of high-Q resonances. In contrast to conventional multipoles, the toroidal dipole interaction strength depends on the time derivative of the surrounding electric field. A characteristic feature of toroidal dipoles is tightly confined loops of oscillating magnetic field that curl around the fictitious arrow of the toroidal dipole vector.

引用

页码：8206 / 8211

页数：6

共 37 条

[1] THE ELECTROMAGNETIC-FIELD OF ELEMENTARY TIME-DEPENDENT TOROIDAL SOURCES [J].

AFANASIEV, GN ;

STEPANOVSKY, YP .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1995, 28 (16) :4565-4580

[2] Plasmonic Toroidal Dipolar Response under Radially Polarized Excitation [J].

Bao, Yanjun ;

Zhu, Xing ;

Fang, Zheyu .

SCIENTIFIC REPORTS, 2015, 5

[3] Dielectric Metamaterials with Toroidal Dipolar Response [J].

Basharin, Alexey A. ;

Kafesaki, Maria ;

Economou, Eleftherios N. ;

Soukoulis, Costas M. ;

Fedotov, Vassili A. ;

Savinov, Vassili ;

Zheludev, Nikolay I. .

PHYSICAL REVIEW X, 2015, 5 (01)

[4] Molecular anapole moments [J].

Ceulemans, A ;

Chibotaru, LF ;

Fowler, PW .

PHYSICAL REVIEW LETTERS, 1998, 80 (09) :1861-1864

[5] Near-Field Inductive Coupling Induced Polarization Control in Metasurfaces [J].

Cong, Longqing ;

Srivastava, Yogesh Kumar ;

Singh, Ranjan .

ADVANCED OPTICAL MATERIALS, 2016, 4 (06) :848-852

[6] Nonradiative and Radiative Resonances in Coupled Metamolecules [J].

Cong, Longqing ;

Xu, Ningning ;

Chowdhury, Dibakar Roy ;

Manjappa, Manukumara ;

Rockstuhl, Carsten ;

Zhang, Weili ;

Singh, Ranjan .

ADVANCED OPTICAL MATERIALS, 2016, 4 (02) :252-258

[7] Fano Resonances in Terahertz Metasurfaces: A Figure of Merit Optimization [J].

Cong, Longqing ;

Manjappa, Manukumara ;

Xu, Ningning ;

Al-Naib, Ibraheem ;

Zhang, Weili ;

Singh, Ranjan .

ADVANCED OPTICAL MATERIALS, 2015, 3 (11) :1537-1543

[8] Toroidal dipole response in a multifold double-ring metamaterial [J].

Dong, Zheng-Gao ;

Ni, Peigen ;

Zhu, Jie ;

Yin, Xiaobo ;

Zhang, X. .

OPTICS EXPRESS, 2012, 20 (12) :13065-13070

[9] TOROID MOMENTS IN ELECTRODYNAMICS AND SOLID-STATE PHYSICS [J].

DUBOVIK, VM ;

TUGUSHEV, VV .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1990, 187 (04) :145-202

[10] Low-loss and high-Q planar metamaterial with toroidal moment [J].

Fan, Yuancheng ;

Wei, Zeyong ;

Li, Hongqiang ;

Chen, Hong ;

Soukoulis, Costas M. .

PHYSICAL REVIEW B, 2013, 87 (11)

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