Frequency dependent power efficiency of a nanostructured surface plasmon coupler

    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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