Saturated excitation of fluorescence to quantify excitation enhancement in aperture antennas

被引：4

作者：

Aouani, Heykel ^{[2
]}

Hostein, Richard ^{[2
]}

Mahboub, Oussama ^{[1
]}

Devaux, Eloise ^{[1
]}

Rigneault, Herve ^{[2
]}

Ebbesen, Thomas W. ^{[1
]}

Wenger, Jerome ^{[2
]}

机构：

[1] Univ Strasbourg, Inst Sci & Ingn Supramol, CNRS, F-67000 Strasbourg, France

[2] Aix Marseille Univ, Inst Fresnel, CNRS, Ecole Cent Marseille, F-13397 Marseille, France

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 16期

关键词：

SINGLE-MOLECULE FLUORESCENCE; LIGHT;

D O I：

10.1364/OE.20.018085

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Fluorescence spectroscopy is widely used to probe the electromagnetic intensity amplification on optical antennas, yet measuring the excitation intensity amplification is a challenge, as the detected fluorescence signal is an intricate combination of excitation and emission. Here, we describe a novel approach to quantify the electromagnetic amplification in aperture antennas by taking advantage of the intrinsic non linear properties of the fluorescence process. Experimental measurements of the fundamental f and second harmonic 2f amplitudes of the fluorescence signal upon excitation modulation are used to quantify the electromagnetic intensity amplification with plasmonic aperture antennas. (C) 2012 Optical Society of America

引用

页码：18085 / 18090

页数：6

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