Study of interference in a double-slit without walls by plasmon tomography techniques

J. Ajimo, C. J. Regan, A. C. Bernussi, S. Park, R. Lopez-Boada, A. A. Bernussi, L. Grave De Peralta

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We investigate the free propagation of two parallel surface plasmon polaritons (SPP) beams using plasmon tomography. In the Fourier-plane images, we observed interference features that are not in correspondence with the images of SPPs on the sample's surface. We clearly observed that the interference maxima and minima are distributed over an arc of a circle. We explain the characteristics of the observed interference patterns assuming that each SPP beam can be considered as a "slit without walls". We discuss important implications of this work for SPP tomography and interferometric plasmonic sensors.

Original languageEnglish
Pages (from-to)4752-4755
Number of pages4
JournalOptics Communications
Volume284
Issue number19
DOIs
StatePublished - Sep 1 2011

Keywords

  • Diffraction
  • Interference
  • Plasmonics
  • Surface plasmon polariton

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