Guided plasmonic modes in nanorod assemblies: strong electromagnetic coupling regime

被引：96

作者：

Wurtz, G. A. ^{[1
]}

Dickson, W. ^{[1
]}

O'Connor, D. ^{[1
]}

Atkinson, R. ^{[1
]}

Hendren, W. ^{[1
]}

Evans, P. ^{[1
]}

Pollard, R. ^{[1
]}

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

机构：

[1] Queens Univ Belfast, IRCEP, Ctr Nanostruct Media, Belfast BT7 1NN, Antrim, North Ireland

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1364/OE.16.007460

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate that the coupling between plasmonic modes of oriented metallic nanorods results in the formation of an extended (guided) plasmonic mode of the nanorod array. The electromagnetic field distribution associated to this mode is found to be concentrated between the nanorods within the assembly and propagates normally to the nanorod long axes, similar to a photonic mode waveguided by an anisotropic slab. This collective plasmonic mode determines the optical properties of nanorod assemblies and can be tuned in a wide spectral range by changing the nanorod array geometry. This geometry represents a unique opportunity for light guiding applications and manipulation at the nanoscale as well as sensing applications and development of molecular plasmonic devices. (C) 2008 Optical Society of America.

引用

页码：7460 / 7470

页数：11

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