  Nano Lett. 2009, 9 (6), pp 2372–2377
Link to paper
Jens Dorfmüller*†, Ralf Vogelgesang*†, R. Thomas Weitz†, Carsten Rockstuhl‡, Christoph Etrich¶, Thomas Pertsch¶, Falk Lederer‡ and Klaus Kern†§ †Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, 70569 Stuttgart, Germany,
‡Institut für Festkörpertheorie and -optik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany,
¶Institut für angewandte Physik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany, and
§Institut de Physique des Nanostructures, école Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland Nano Lett., Article ASAP DOI: 10.1021/nl900900r Publication Date (Web): May 27, 2009 Copyright © 2009 American Chemical Society Abstract. We study the near-field optical behavior of Fabry-Pérot resonances in thin metal nanowires, also referred to as quasi one-dimensional plasmonic nanoantennas. From eigenmodes well beyond quadrupolar order we extract both, propagation constant and reflection phase of the guided surface plasmon polariton with superb accuracy. The combined symmetry breaking effects of oblique illumination and retardation allow the excitation of dipole forbidden, even order resonances. All measurements are supported by rigorous simulations of the experimental situation.
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