Passive hyperspectral terahertz imagery for security screening using a cryogenic microbolometer
Arttu Luukanen, Aaron J. Miller, Erich N. Grossman
We present passive indoor imagery of human subjects in the 100 - 1000 GHz band. In order to obtain adequate ensitivity, 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.
, Miller, A.
and Grossman, E.
Passive hyperspectral terahertz imagery for security screening using a cryogenic microbolometer, SPIE's Security and Defence Symposium 2005, , USA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=31947
(Accessed December 5, 2023)