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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3952–3966

Transmission enhancement through deep subwavelength apertures using connected split ring resonators

Damla Ates, Atilla Ozgur Cakmak, Evrim Colak, Rongkuo Zhao, C. M. Soukoulis, and Ekmel Ozbay  »View Author Affiliations

Optics Express, Vol. 18, Issue 4, pp. 3952-3966 (2010)

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We report astonishingly high transmission enhancement factors through a subwavelength aperture at microwave frequencies by placing connected split ring resonators in the vicinity of the aperture. We carried out numerical simulations that are consistent with our experimental conclusions. We experimentally show higher than 70,000-fold extraordinary transmission through a deep subwavelength aperture with an electrical size of λ/31×λ/12 (width × length), in terms of the operational wavelength. We discuss the physical origins of the phenomenon. Our numerical results predict that even more improvements of the enhancement factors are attainable. Theoretically, the approach opens up the possibility for achieving very large enhancement factors by overcoming the physical limitations and thereby minimizes the dependence on the aperture geometries.

© 2010 OSA

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(160.3918) Materials : Metamaterials

ToC Category:

Original Manuscript: December 17, 2009
Revised Manuscript: January 31, 2010
Manuscript Accepted: February 2, 2010
Published: February 12, 2010

Damla Ates, Atilla Ozgur Cakmak, Evrim Colak, Rongkuo Zhao, C. M. Soukoulis, and Ekmel Ozbay, "Transmission enhancement through deep subwavelength apertures using connected split ring resonators," Opt. Express 18, 3952-3966 (2010)

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