A passive terahertz video camera based on lumped element kinetic inductance detectors

Rowe, Sam, Pascale, Enzo ORCID: https://orcid.org/0000-0002-3242-8154, Doyle, Simon ORCID: https://orcid.org/0000-0002-9054-986X, Dunscombe, Chris, Hargrave, Peter ORCID: https://orcid.org/0000-0002-3109-6629, Papageorgiou, Andreas, Wood, Ken, Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Barry, Peter, Bideaud, Aurelien, Brien, Tom, Dodd, Chris, Grainger, William, House, Julian, Mauskopf, Philip ORCID: https://orcid.org/0000-0001-6397-5516, Moseley, Paul, Spencer, Locke, Sudiwala, Rashmi ORCID: https://orcid.org/0000-0003-3240-5304, Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918 and Walker, Ian 2016. A passive terahertz video camera based on lumped element kinetic inductance detectors. Review of Scientific Instruments 87 (3) , 033105. 10.1063/1.4941661

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Abstract

We have developed a passive 350 GHz (850 μm) video-camera to demonstrate lumped element kinetic inductance detectors (LEKIDs)—designed originally for far-infrared astronomy—as an option for general purpose terrestrial terahertz imaging applications. The camera currently operates at a quasi-video frame rate of 2 Hz with a noise equivalent temperature difference per frame of ∼0.1 K, which is close to the background limit. The 152 element superconducting LEKID array is fabricated from a simple 40 nm aluminum film on a silicon dielectric substrate and is read out through a single microwave feedline with a cryogenic low noise amplifier and room temperature frequency domain multiplexing electronics.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Uncontrolled Keywords:	low noise amplifiers superconducting arrays infrared imaging video cameras infrared astronomy aluminium terahertz wave imaging silicon kinetic inductance detectors
Publisher:	AIP Publishing
ISSN:	0034-6748
Date of First Compliant Deposit:	30 March 2016
Date of Acceptance:	23 January 2016
Last Modified:	11 Oct 2023 19:05
URI:	https://orca.cardiff.ac.uk/id/eprint/88259

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