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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 9 — Sep. 1, 2006
  • pp: 2342–2348

Field enhancement in single subwavelength apertures

Evgeny Popov, Michel Nevière, Jérôme Wenger, Pierre-François Lenne, Hervé Rigneault, Patric Chaumet, Nicolas Bonod, José Dintinger, and Thomas Ebbesen  »View Author Affiliations


JOSA A, Vol. 23, Issue 9, pp. 2342-2348 (2006)
http://dx.doi.org/10.1364/JOSAA.23.002342


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Abstract

A peak of the detected fluorescence rate per molecule has recently been observed in experiments of fluorescence correlation spectroscopy carried out on subwavelength apertures in metallic screens, a phenomenon that appears at a diameter-to-wavelength ratio below the fundamental mode cutoff. Although the origin of the resonant transmission through a subwavelength aperture has been well explained in terms of excitation of plasmon surface modes on the aperture ridge, the origin of the maximum that occurs at a radius-to-wavelength ratio smaller than 1 4 was not clear. Using a rigorous electromagnetic theory of light diffraction in cylindrical geometry, we show that it is linked to the appearance of the fundamental mode propagating inside the aperture. We obtain good agreement between the theoretical and the experimental results.

© 2006 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(050.1940) Diffraction and gratings : Diffraction
(300.2530) Spectroscopy : Fluorescence, laser-induced

ToC Category:
Spectroscopy

History
Original Manuscript: December 2, 2005
Revised Manuscript: March 7, 2006
Manuscript Accepted: March 9, 2006

Citation
Evgeny Popov, Michel Nevière, Jérôme Wenger, Pierre-François Lenne, Hervé Rigneault, Patric Chaumet, Nicolas Bonod, José Dintinger, and Thomas Ebbesen, "Field enhancement in single subwavelength apertures," J. Opt. Soc. Am. A 23, 2342-2348 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-9-2342

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