26 May 2011 High-resolution passive video-rate imaging at 350 GHz
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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.
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Daniel Becker, Daniel Becker, Cale Gentry, Cale Gentry, Peter Ade, Peter Ade, James Beall, James Beall, Hsiao-Mei Cho, Hsiao-Mei Cho, Simon Dicker, Simon Dicker, William Duncan, William Duncan, Mark Halpern, Mark Halpern, Gene Hilton, Gene Hilton, Kent Irwin, Kent Irwin, Peter Lowell, Peter Lowell, Michael Niemack, Michael Niemack, Nick Paulter, Nick Paulter, Carl Reintsema, Carl Reintsema, Frank Schima, Frank Schima, Robert Schwall, Robert Schwall, Carole Tucker, Carole Tucker, } "High-resolution passive video-rate imaging at 350 GHz", Proc. SPIE 8022, Passive Millimeter-Wave Imaging Technology XIV, 802206 (26 May 2011); doi: 10.1117/12.884374; https://doi.org/10.1117/12.884374

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