A metamaterial telescope at millimetre wavelengths

Savini, G., Hargrave, P. C. ORCID: https://orcid.org/0000-0002-3109-6629, Ade, P. A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Shitvov, A., Sudiwala, R. ORCID: https://orcid.org/0000-0003-3240-5304, Pisano, G., Tucker, C. ORCID: https://orcid.org/0000-0002-1851-3918 and Zhang, J. 2026. A metamaterial telescope at millimetre wavelengths. Presented at: SPIE Astronomical Telescopes + Instrumentation, 2026, Copenhagen, Denmark, 5-11 July 2026. Published in: Zmuidzinas, Jonas and Gao, Jian-Rong eds. Proceedings Volume 14156: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XIII. Proceedings of SPIE. , vol.14156 Society of Photo-optical Instrumentation Engineers, 10.1117/12.3105074

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Abstract

We present a novel metamaterial telescope composed exclusively of thin, flat elements, each being a tested hot-pressed photo-lithographic structure combining the properties of a lens, tuned anti-reflection and frequency selection or filtering. We discuss the design process from ab-initio physical metamaterial properties of the single periodic cell structure to the lens concept which constitutes the building block of the telescope design and the iterative process that is part of the lens optimization. We discuss the main results of a testing campaign showing on- and off-axis performance for a given combination of thin lenses.

Item Type:	Conference or Workshop Item - published (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy Schools > Physical, Chemical & Environmental Sciences
Additional Information:	Article number: 141560P
Publisher:	Society of Photo-optical Instrumentation Engineers
ISSN:	0277-786X
Last Modified:	27 Aug 2026 14:00
URI:	https://orca.cardiff.ac.uk/id/eprint/189218

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