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High-resolution passive video-rate imaging at 350 GHz.

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Title: High-resolution passive video-rate imaging at 350 GHz.
Author: Halpern, Mark
Issue Date: 2011
Publicly Available in cIRcle 2011-09-12
Publisher Society of Photo-Optical Instrumentation Engineers
Citation: Becker, Daniel; Gengry, Cale; Ade, Peter A. R.; Beall, James R.; Cho, Hsiao-Mei; Dicker, Simon R.; Duncan, William D.; Halpern, Mark; Hilton, Gene C.; Irwin, Kent D.; Lowell, Peter; Niemack, Michael D.; Paulter, Nick; Reintsema, Carl D.; Schima, Frank; Schwall, Robert; Tucker, Carole E. High-resolution passive video-rate imaging at 350 GHz. Passive Millimeter-Wave Imaging Technology XIV, edited by David A. Wikner, Arttu R. Luukanen, Proceedings of SPIE Volume 8022, 802206, 2011. http://dx.doi.org/10.1117/12.884374
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. Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Affiliation: Physics and Astronomy, Dept of
URI: http://hdl.handle.net/2429/37221
Peer Review Status: Reviewed
Scholarly Level: Faculty

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