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High-resolution passive video-rate imaging at 350 GHz

Becker, Daniel, Gentry, Cale, Ade, Peter A. R., 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 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 Bellingham, WA: SPIE, p. 802206. 10.1117/12.884374

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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: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Additional Information: SPIE Proceedings; Volume 8022: Imaging Systems
Publisher: SPIE
ISBN: 0819485969
Last Modified: 04 Jun 2017 04:05

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