Symmetry breaking in a plasmonic metamaterial at optical wavelength

被引：221

作者：

Christ, Andre ^{[1
]}

Martin, Olivier J. F. ^{[1
]}

Ekinci, Yasin ^{[2
]}

Gippius, Nikolai A. ^{[3
,4
]}

Tikhodeev, Sergei G. ^{[4
]}

机构：

[1] Ecole Polytech Fed Lausanne, Nanophoton & Metrol Lab, CH-1015 Lausanne, Switzerland

[2] Swiss Fed Inst Technol, Lab Met Phys & Technol, CH-8093 Zurich, Switzerland

[3] Univ Blaise Pascal, CNRS, UMR 6602, LASMEA, F-63177 Aubiere, France

[4] RAS, AM Prokhorov Gen Phys Inst, Moscow 119991, Russia

来源：

NANO LETTERS | 2008年 / 8卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1021/nl0805559

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We numerically study the effect of structural asymmetry in a plasmonic metamaterial made from gold nanowires. It is reported that optically inactive (i.e., optically dark) particle plasmon modes of the symmetric wire lattice are immediately coupled to the radiation field, when a broken structural symmetry is introduced. Such higher order plasmon resonances are characterized by their subradiant nature. They generally reveal long lifetimes and distinct absorption losses. It is shown that the near-field interaction strongly determines these modes.

引用

页码：2171 / 2175

页数：5

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