Metamaterial with negative index due to chirality

被引：683

作者：

Plum, E. ^{[1
]}

Zhou, J. ^{[2
,6
,7
,8
]}

Dong, J. ^{[3
,6
,7
]}

Fedotov, V. A. ^{[1
]}

Koschny, T. ^{[4
,5
,6
,7
]}

Soukoulis, C. M. ^{[4
,5
,6
,7
]}

Zheludev, N. I. ^{[1
]}

机构：

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

[2] Iowa State Univ, Dept Elect & Comp Engn, Ames, IA 50011 USA

[3] Ningbo Univ, Inst Opt Fiber Commun & Network Technol, Ningbo 315211, Peoples R China

[4] Univ Crete, Dept Mat Sci & Technol, Iraklion, Greece

[5] Univ Crete, FORTH, Inst Elect Struct & Laser, Iraklion, Greece

[6] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA

[7] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[8] Iowa State Univ, Microelect Res Ctr, Ames, IA 50011 USA

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

chirality; circular dichroism; metamaterials; optical materials; optical multilayers; optical rotation; polarisation; refractive index; REFRACTION; COMPOSITES; LIGHT;

D O I：

10.1103/PhysRevB.79.035407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recently it has been predicted that materials with exceptionally strong optical activity may also possess a negative refractive index, allowing the realization of superlenses for super-resolution imaging and data storage applications. Here we demonstrate experimentally and numerically that a chirality-induced negative index of refraction is possible. A negative index of refraction due to three-dimensional chirality is demonstrated for a bilayered metamaterial based on pairs of mutually twisted planar metal patterns in parallel planes, which also shows negative electric and magnetic responses and exceptionally strong optical activity and circular dichroism. Multilayered forms of the metamaterial are found to be suitable for use as ultrathin polarization rotators and circular polarizers for practical applications.

引用

页数：6

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