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19 May 2005 Passive hyperspectral terahertz imagery for security screening using a cryogenic microbolometer
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Abstract
We present passive indoor imagery of human subjects in the 100 - 1000 GHz band. In order to obtain adequate sensitivity, a cryogenically cooled (4 K), broadband antenna-coupled, superconducting microbolometer with optical noise equivalent power NEP < 2 pW/rtHz was used as the sensor. Mechanical scanning of the collecting aperture, a 30 cm diameter spherical mirror, was used to slowly accumulate the images. While not yet practical for deployable real-time cameras, this system provides valuable phenomenological comparisons with similar imagery obtained with actively illuminated systems.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Arttu Luukanen, Aaron J. Miller, and Erich N. Grossman "Passive hyperspectral terahertz imagery for security screening using a cryogenic microbolometer", Proc. SPIE 5789, Passive Millimeter-Wave Imaging Technology VIII, (19 May 2005); https://doi.org/10.1117/12.608838
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