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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 4 — Feb. 23, 2004
  • pp: 623–632

Spectral analysis of resonant transmission of light through a single sub-wavelength slit

J. Lindberg, K. Lindfors, T. Setälä, M. Kaivola, and A. T. Friberg  »View Author Affiliations

Optics Express, Vol. 12, Issue 4, pp. 623-632 (2004)

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We analyze the spectral properties of resonant transmission of light through a sub-wavelength slit in a metal film. We show that the enhanced transmission can be understood in terms of interfering surface-wave-like modes propagating in the slit. We characterize the effect of geometrical and material properties of the slit on the transmission spectrum. Furthermore, we show that the wavelength of the transmission resonance strongly depends on the surrounding medium. This effect may be utilized in sensors, imaging, and the detection of, e.g. biomolecules.

© 2004 Optical Society of America

OCIS Codes
(110.1220) Imaging systems : Apertures
(230.7390) Optical devices : Waveguides, planar
(240.6690) Optics at surfaces : Surface waves
(260.1960) Physical optics : Diffraction theory

ToC Category:
Research Papers

Original Manuscript: December 23, 2003
Revised Manuscript: February 10, 2004
Published: February 23, 2004

Jari Lindberg, K. Lindfors, T. Setälä, M. Kaivola, and A. Friberg, "Spectral analysis of resonant transmission of light through a single sub-wavelength slit," Opt. Express 12, 623-632 (2004)

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