Waveguide-coupled nanowire as an optical antenna

被引：23

作者：

Arnaud, Laurent ^{[1
]}

Bruyant, Aurelien ^{[1
]}

Renault, Mikael ^{[1
]}

Hadjar, Yassine ^{[1
]}

Salas-Montiel, Rafael ^{[1
]}

Apuzzo, Aniello ^{[1
]}

Lerondel, Gilles ^{[1
]}

Morand, Alain ^{[2
]}

Benech, Pierre ^{[2
]}

Le Coarer, Etienne ^{[3
]}

Blaize, Sylvain ^{[1
]}

机构：

[1] Univ Technol Troyes, Lab Nanotechnol & Instrumentat Opt, Inst Charles Delaunay, CNRS,UMR 6279, F-10010 Troyes, France

[2] CNRS, UMR5130, Inst Microelect Electromagnetisme & Photon, INPG,UJF, F-38016 Grenoble, France

[3] Univ Grenoble 1, CNRS, Lab Astrophys Grenoble, F-38041 Grenoble, France

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2013年 / 30卷 / 11期

关键词：

PLASMON RESONANCE; NANOANTENNAS; METALS;

D O I：

10.1364/JOSAA.30.002347

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the optical coupling between a gold nanowire and a silver ion-exchanged waveguide, with special emphasis on the nanowire antenna radiation pattern. We measure the radiation patterns of waveguide-coupled gold nanowires with a height of 70 nm and width of 50 or 150 nm in the 450-700 nm spectral range for TE and TM polarizations. We perform a systematic theoretical study on the wavelength, polarization, nanowire size, and material dependences on the properties of the radiation pattern. We also give some elements concerning absorption and near-field. Experiments and calculations show localized plasmon resonance for the polarization orthogonal to the wire (far-field resonance at 580 nm for the smallest wire and 670 nm for the widest). It is shown that a great variety of radiation patterns can be obtained, together with a high sensitivity to a change of one parameter, particularly near-resonance. (C) 2013 Optical Society of America

引用

页码：2347 / 2355

页数：9

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