Multi-octave metamaterial reflective half-wave plate for millimeter and sub-millimeter wave applications

Pisano, Giampaolo ORCID: https://orcid.org/0000-0003-4302-5681, Maffei, Bruno, Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, de Bernardis, Paolo, de Maagt, Peter, Ellison, Brian, Henry, Manju, Ng, Ming Wah, Schortt, Brian and Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918 2016. Multi-octave metamaterial reflective half-wave plate for millimeter and sub-millimeter wave applications. Applied Optics 55 (36) , pp. 10255-10262. 10.1364/AO.55.010255

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Abstract

The quasi-optical modulation of linear polarization at millimeter and sub-millimeter wavelengths can be achieved by using rotating half-wave plates (HWPs) in front of polarization-sensitive detectors. Large operational bandwidths are required when the same device is meant to work simultaneously across different frequency bands. Previous realizations of half-wave plates, ranging from birefringent multi-plates to mesh-based devices, have achieved bandwidths of the order of 100%. Here we present the design and experimental characterization of a reflective HWP able to work across bandwidths of the order of 150%. The working principle of the novel device is completely different from any previous realization, and it is based on the different phase-shift experienced by two orthogonal polarizations reflecting, respectively, off an electric conductor and an artificial magnetic conductor.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	Osa Optical Society of America
ISSN:	0003-6935
Date of First Compliant Deposit:	9 January 2017
Date of Acceptance:	11 November 2016
Last Modified:	07 Nov 2023 07:13
URI:	https://orca.cardiff.ac.uk/id/eprint/97303

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