Rotated infrared antenna transmitarray for the manipulation of circularly polarized wavefronts
Department of Electrical and Computer Engineering, University of Toronto, Canada
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Accepted: 16 February 2015
Published online: 6 April 2015
An IR optical transmitarray is presented based on Antenna Array Sheet (AAS) for the manipulation of circularly polarized light. The unit cell of the transmitarray comprises three layers of metallic elliptical patches. Complete phase control is achieved through the local rotation of each unit cell. Thin refraction and focusing transmitarrays of this sort are demonstrated at infrared frequencies. Moreover, a new concept for realizing a polarization-discriminating device is introduced based on a flat refracting lens. These devices are compatible with current fabrication technology and can become crucial for the integration with other IR and nano-photonic devices.
Key words: Metasurfaces / Transmitarrays / Infrared lens / Circular polarization / Polarization discrimination
© Y. He and G.V. Eleftheriades, Published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.