Fluorescence relaxation in the near-field of a mesoscopic metallic particle: distance dependence and role of plasmon modes

被引：79

作者：

des Francs, G. Colas ^{[1
]}

Bouhelier, A. ^{[1
]}

Finot, E. ^{[1
]}

Weeber, J. C. ^{[1
]}

Dereux, A. ^{[1
]}

Girard, C. ^{[2
]}

Dujardin, E. ^{[2
]}

机构：

[1] Univ Bourgogne, CNRS, UMR 5209, Inst Carnot Bourgogne, F-21078 Dijon, France

[2] Ctr Elaborat Mat & Etud Struct CNRS, F-31055 Toulouse, France

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 22期

关键词：

D O I：

10.1364/OE.16.017654

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analytically and numerically analyze the fluorescence decay rate of a quantum emitter placed in the vicinity of a spherical metallic particle of mesoscopic size (i.e with dimensions comparable to the emission wavelength). We discuss the efficiency of the radiative decay rate and non-radiative coupling to the particle as well as their distance dependence. The electromagnetic coupling mechanisms between the emitter and the particle are investigated by analyzing the role of the plasmon modes and their nature (dipole, multipole or interface mode). We demonstrate that near-field coupling can be expressed in a simple form verifying the optical theorem for each particle modes. (C) 2008 Optical Society of America

引用

页码：17654 / 17666

页数：13

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