Title

Planar Infrared Binary Phase Reflectarray

Abstract

A reflective, binary phase reflectarray is demonstrated in the infrared, at a wavelength of 10.6 μm. 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.

Publication Date

4-15-2008

Publication Title

Optics Letters

Volume

33

Issue

8

Number of Pages

779-781

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.33.000779

Socpus ID

43249107425 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/43249107425

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