Development of dual-polarization LEKIDs for CMB observations

McCarrick, Heather, Abitbol, Maximilian H., Ade, Peter A.R. ORCID: https://orcid.org/0000-0002-5127-0401, Barry, Peter, Bryan, Sean, Che, George, Day, Peter, Simon, Doyle, Flanigan, Daniel, Johnson, Bradley R., Jones, Glen, LeDuc, Henry G., Limon, Michele, Mauskopf, Philip ORCID: https://orcid.org/0000-0001-6397-5516, Miller, Amber, Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918 and Zmuidzinas, Jonas 2016. Development of dual-polarization LEKIDs for CMB observations. Presented at: SPIE Astronomical Telescopes + Instrumentation 2016, Edinburgh, Scotland, 26 June - 1 July 2016. Proceedings Volume 9914. Millimeter, Submillimeter, and Far Infrared Detectors and Instrumentation for Astronomy VIII. , vol.9914 SPIE, pp. 150-156. 10.1117/12.2231830

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Abstract

We discuss the design considerations and initial measurements from arrays of dual-polarization, lumped-element kinetic inductance detectors (LEKIDs) nominally designed for cosmic microwave background (CMB) studies. The detectors are horn-coupled, and each array element contains two single-polarization LEKIDs, which are made from thin-film aluminum and optimized for a single spectral band centered on 150 GHz. We are developing two array architectures, one based on 160 micron thick silicon wafers and the other based on silicon-on-insulator (SOI) wafers with a 30 micron thick device layer. The 20-element test arrays (40 LEKIDs) are characterized with both a linearly-polarized electronic millimeter wave source and a thermal source. We present initial measurements including the noise spectra, noise-equivalent temperature, and responsivity. We discuss future testing and further design optimizations to be implemented.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Publisher:	SPIE
Related URLs:	Organisation
Last Modified:	11 Oct 2023 12:00
URI:	https://orca.cardiff.ac.uk/id/eprint/155740

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