Resonant backward scattering of light by a subwavelength metallic slit with two open sides

S. V. Kukhlevsky, M. Mechler, L. Csapó, K. Janssens, O. Samek

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10 Citations (Scopus)

Abstract

The backward scattering of TM-polarized light by a two-side-open subwavelength slit in a metal film is analyzed. We show that the reflection coefficient versus wavelength possesses a Fabry-Perot-like dependence that is similar to the anomalous behavior of transmission reported in the study [Y. Takakura, Phys. Rev. Lett. 86, 5601 (2001)]. The open slit totally reflects the light at the near-to-resonance wavelengths. In addition, we show that the interference of incident and resonantly backward-scattered light produces in the near-field diffraction zone a spatially localized wave whose intensity is 10-103 times greater than the incident wave, but one order of magnitude smaller than the intracavity intensity. The amplitude and phase of the resonant wave at the slit entrance and exit are different from that of a Fabry-Perot cavity.

Original languageEnglish
Article number165421
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number16
DOIs
Publication statusPublished - Oct 15 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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