Title

Frequency dependent power efficiency of a nanostructured surface plasmon coupler

Authors

Authors

A. Ghoshal;P. G. Kik

Comments

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Abbreviated Journal Title

Phys. Status Solidi-Rapid Res. Lett.

Keywords

surface plasmons; plasmons; optical coupling; devices; WAVE-GUIDES; GAP; Materials Science, Multidisciplinary; Physics, Applied; Physics, ; Condensed Matter

Abstract

Surface plasmon (SP) excitation on an extended thin metal film via a miniature nanoparticle-enhanced grating coupler is studied experimentally using leakage radiation spectroscopy. A universally applicable method for determining the efficiency of free-space SP excitation is developed, and the efficiency of the coupler is determined. Two distinct grating excitation modes are observed, as well as a particle-mediated excitation mode. The maximum observed coupling efficiency of the structure was approximately 3.5% at 615 nm and 670 nm, corresponding to the two grating modes of the structure. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Journal Title

Physica Status Solidi-Rapid Research Letters

Volume

4

Issue/Number

10

Publication Date

1-1-2010

Document Type

Article

Language

English

First Page

280

Last Page

282

WOS Identifier

WOS:000284051400015

ISSN

1862-6254

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