High-resolution passive video-rate imaging at 350 GHz

Becker, Daniel, Gentry, Cale, Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Beall, James, Cho, Hsiao-Mei, Dicker, Simon, Duncan, William, Halpern, Mark, Hilton, Gene, Irwin, Kent, Lowell, Peter, Niemack, Michael, Paulter, Nick, Reintsema, Carl, Schima, Frank, Schwall, Robert and Tucker, Carole Elizabeth ORCID: https://orcid.org/0000-0002-1851-3918 2011. High-resolution passive video-rate imaging at 350 GHz. Presented at: Passive Millimeter-Wave Imaging Technology XIV, Orlando, FL, USA, 28 April 2011. Proceedings of Passive Millimeter-Wave Imaging Technology X1V held in Orlando FL 28 April 2011. SPIE Proceedings , vol.8022 Bellingham, WA: SPIE, p. 802206. 10.1117/12.884374

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Abstract

We are developing a 350 GHz cryogenic passive video imaging system for use in standoff security applications. This demonstration system uses 800 photon-noise-limited superconducting transition edge sensor bolometers, read out using a time-division multiplexed readout system. It will image a 1 m x 1 m field of view at a standoff distance of 16 m to a resolution of approximately 1 cm at video frame rates (20 frames per second). High spatial resolution is achieved by the use of an f/2.0 Cassegrain optical system with 1.3 m primary mirror. Preliminary dark and optical testing of prototype detectors indicates that we can achieve a noise equivalent temperature difference (NETD) below 100 mK for the fully sampled 1 m x 1 m image at 20 frames per second. We report on the current status of development of this system.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Additional Information:	SPIE Proceedings; Volume 8022: Imaging Systems
Publisher:	SPIE
ISBN:	0819485969
Last Modified:	20 Oct 2022 09:33
URI:	https://orca.cardiff.ac.uk/id/eprint/32474

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