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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 8 — Apr. 15, 2008
  • pp: 779–781

Planar infrared binary phase reflectarray

James Ginn, Brian Lail, Javier Alda, and Glenn Boreman  »View Author Affiliations

Optics Letters, Vol. 33, Issue 8, pp. 779-781 (2008)

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A reflective, binary phase reflectarray is demonstrated in the infrared, at a wavelength of 10.6 μ m . The unique aspect of this work, at this frequency band, is that the specific desired phase shift is achieved using an array of subwavelength metallic patches on top of a ground-plane-backed dielectric stand-off layer. This is an alternative to the usual method of constructing a reflective Fresnel zone plate by means of a given thickness of dielectric. This initial demonstration of the reflectarray approach at infrared is significant in that there is inherent flexibility to create a range of phase shifts by varying the dimensions of the patches. This will allow for a multilevel phase distribution, or even a continuous variation of phase, across an optical surface with only two-dimensional lithography, avoiding the need for dielectric height variations.

© 2008 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(160.3918) Materials : Metamaterials

ToC Category:
Diffraction and Gratings

Original Manuscript: January 23, 2008
Revised Manuscript: February 12, 2008
Manuscript Accepted: March 5, 2008
Published: April 8, 2008

James Ginn, Brian Lail, Javier Alda, and Glenn Boreman, "Planar infrared binary phase reflectarray," Opt. Lett. 33, 779-781 (2008)

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