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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 6 — Mar. 15, 2006
  • pp: 814–816

Experimental demonstration of subwavelength focusing of electromagnetic waves by labyrinth-based two-dimensional metamaterials

Irfan Bulu, Humeyra Caglayan, and Ekmel Ozbay  »View Author Affiliations

Optics Letters, Vol. 31, Issue 6, pp. 814-816 (2006)

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We studied focusing in a two-dimensional metamaterial that was based on a labyrinth structure. We theoretically showed that the labyrinth-based metamaterial exhibits negative indices of refraction between 6 and 6.4 GHz . We experimentally studied the focusing effect by measuring electric field intensities on the output side of the metamaterial when the source was placed in front of the input side of the metamaterial. Our experimental results showed that it is in fact possible to focus the source field with half-widths as small as λ 4 by using the labyrinth-based metamaterial.

© 2006 Optical Society of America

OCIS Codes
(350.4010) Other areas of optics : Microwaves

ToC Category:
Physical Optics

Original Manuscript: August 26, 2005
Revised Manuscript: November 1, 2005
Manuscript Accepted: November 1, 2005

Irfan Bulu, Humeyra Caglayan, and Ekmel Ozbay, "Experimental demonstration of subwavelength focusing of electromagnetic waves by labyrinth-based two-dimensional metamaterials," Opt. Lett. 31, 814-816 (2006)

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