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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 18 — Sep. 5, 2005
  • pp: 6980–6989

Light transmission through a high index dielectric-filled sub-wavelength hole in a metal film

Juuso Olkkonen, Kari Kataja, and Dennis Howe  »View Author Affiliations

Optics Express, Vol. 13, Issue 18, pp. 6980-6989 (2005)

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We investigate transmission of a normally incident, linearly polarized plane wave through a circular sub-wavelength hole in a metal film filled by a high index dielectric medium. We demonstrate for the first time that the trans-mission efficiency of such holes exhibits a Fabry-Pérot like behaviour versus thickness of the metal film, similar to that exhibited by sub-wavelength slits in metal films illuminated by TM-polarized plane waves. We show that by reducing the imaginary part of the propagation constant of the hybrid HE11 mode and by fortifying the Fabry-Pérot resonance, the high index dielectric filling can greatly enhance light transmission through a circular sub-wavelength hole.

© 2005 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.1940) Diffraction and gratings : Diffraction

ToC Category:
Research Papers

Original Manuscript: June 27, 2005
Revised Manuscript: July 29, 2005
Published: September 5, 2005

Juuso Olkkonen, Kari Kataja, and Dennis Howe, "Light transmission through a high index dielectric-filled sub-wavelength hole in a metal film," Opt. Express 13, 6980-6989 (2005)

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