Excitation and emission enhancement of single molecule fluorescence through multiple surface-plasmon resonances on metal trimer nanoantennas

被引：55

作者：

Giannini, V. ^{[1
]}

Sanchez-Gil, J. A. ^{[1
]}

机构：

[1] Consejo Super Invest Cientif, Inst Estructura Mat, Madrid 28006, Spain

来源：

OPTICS LETTERS | 2008年 / 33卷 / 09期

关键词：

D O I：

10.1364/OL.33.000899

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study theoretically the light scattering from trimers of metal nanowires, with emphasis on the occurrence of multiple surface-plasmon resonances, showing that such resonances can be exploited to achieve twofold-enhanced fluorescence from a single molecule placed in the nanotrimer gaps, even if excitation and emission frequencies are separated. Pump enhancement stems from the local field enhancement coinciding with one of the resonances, whereas a strong enhancement of the radiative decay rate (and quantum yield) is revealed at a different resonance, leading to a large overall signal emission. (C) 2008 Optical Society of America.

引用

页码：899 / 901

页数：3

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