Narrowband optical interactions in a plasmonic nanoparticle chain coupled to a metallic film

被引：28

作者：

Brunazzo, Daniele ^{[1
,2
]}

Descrovi, Emiliano ^{[2
]}

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

机构：

[1] EPFL STI NAM, Swiss Fed Inst Technol Lausanne, Nanophoton & Metrol Lab, ELG Stn 11, CH-1015 Lausanne, Switzerland

[2] XLabPolitecn Torino, Microsyst & Mat Lab, I-10129 Turin, Italy

来源：

OPTICS LETTERS | 2009年 / 34卷 / 09期

关键词：

LINE-SHAPES; SCATTERING; NANOSENSORS; ARRAYS; WAVES; LIGHT;

D O I：

10.1364/OL.34.001405

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the coupling of localized surface plasmon (LSP) and surface-plasmon polariton (SPP) modes in a system composed of a metallic nanoparticle chain separated from a thin metallic film by a dielectric spacer. The thickness of such a spacer influences the level of interaction between LSP and SPP modes and controls the electromagnetic enhancement in this system. An enhancement with narrow resonances can be observed for appropriate parameters. The high-resonance quality factor and tunability of this system make it a very promising candidate for biosensing and surface-enhanced spectroscopy applications. (C) 2009 Optical Society of America

引用

页码：1405 / 1407

页数：3

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