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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 32 — Nov. 10, 2005
  • pp: 6898–6904

Enhanced transmission of light through a circularly structured aperture

Evgeny Popov, Michel Nevière, Anne-Laure Fehrembach, and Nicolas Bonod  »View Author Affiliations


Applied Optics, Vol. 44, Issue 32, pp. 6898-6904 (2005)
http://dx.doi.org/10.1364/AO.44.006898


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Abstract

Using the differential theory of light diffraction by finite cylindrical objects, we study light transmission through a small circular aperture in a metallic screen with concentric corrugation around the nanohole. Poynting vector maps in the region below the screen show that the field enhancement compared with an unstructured aperture is obtained with corrugation lying on the entrance face of the screen. Corrugation on the exit face leads to a more directional radiation close to the normal to the screen. The spectral dependence of the transmission shows a sharp maximum linked with surface plasmon excitation.

© 2005 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

History
Original Manuscript: May 10, 2005
Revised Manuscript: July 29, 2005
Manuscript Accepted: August 5, 2005
Published: November 10, 2005

Citation
Evgeny Popov, Michel Nevière, Anne-Laure Fehrembach, and Nicolas Bonod, "Enhanced transmission of light through a circularly structured aperture," Appl. Opt. 44, 6898-6904 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-32-6898

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