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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3946–3951

Resonant infrared transmission and effective medium response of subwavelength H-fractal apertures

Bo Hou, Xin Qing Liao, and Joyce K. S. Poon  »View Author Affiliations


Optics Express, Vol. 18, Issue 4, pp. 3946-3951 (2010)
http://dx.doi.org/10.1364/OE.18.003946


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Abstract

The transmission through periodic arrays of subwavelength H-fractal apertures in a gold film at infrared wavelengths is investigated numerically. H-fractal apertures support subwavelength cut-off resonances that are hybridized with surface plasmons along the sidewalls of the aperture. Enhanced transmission occurs at wavelengths that are about ten times the aperture side length. The highly subwavelength size scale of the H-fractal enables an effective medium parameter description for the aperture array, which reveals a lossy plasma permittivity and a diamagnetic permeability.

© 2010 OSA

OCIS Codes
(160.3918) Materials : Metamaterials
(250.5403) Optoelectronics : Plasmonics
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Metamaterials

History
Original Manuscript: December 14, 2009
Revised Manuscript: January 25, 2010
Manuscript Accepted: February 4, 2010
Published: February 12, 2010

Citation
Bo Hou, Xin Qing Liao, and Joyce K. S. Poon, "Resonant infrared transmission and effective medium response of subwavelength H-fractal apertures," Opt. Express 18, 3946-3951 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-4-3946


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