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Surface plasmon interferometry: Measuring group velocity of surface plasmons

  • Vasily V. Temnov
  • , Ulrike Woggon
  • , José Dintinger
  • , Eloise Devaux
  • , Thomas W. Ebbesen
  • University of Dortmund
  • Université de Strasbourg

Research output: Contribution to journalArticlepeer-review

Abstract

Optical transmission spectroscopy on metal films with slit-groove pairs is conducted. Spectra of the light transmitted through the slit exhibit Fabry-Perot-type interference fringes due to surface plasmons propagating between the slit and the groove. The spectral dependence of the period of interference fringes is used to determine the group velocity of surface plasmons on flat gold and silver surfaces.

Original languageEnglish
Pages (from-to)1235-1237
Number of pages3
JournalOptics Letters
Volume32
Issue number10
DOIs
Publication statusPublished - 15 May 2007
Externally publishedYes

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