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23 April 2020 A fully-staring THz video camera for concealed object detection (Conference Presentation)
Juho Luomahaara, Hannu Sipola, Leif Grönberg, Andrey V. Timofeev, Kirsi Tappura, Mika Aikio, Aki P. Mäyrä, Anssi Rautiainen, Visa Vesterinen, Mikko M. Leivo, Feng Gao, Hannu Vasama, Aleksi Tamminen, Arttu R. Luukanen, Juha Hassel
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Proceedings Volume 11411, Passive and Active Millimeter-Wave Imaging XXIII; 114110J (2020) https://doi.org/10.1117/12.2558047
Event: SPIE Defense + Commercial Sensing, 2020, Online Only
Abstract
We present a fully-staring THz video camera prototype intended for security screening. The camera utilizes so-called kinetic inductance bolometers to detect THz radiation in the bandwidth of 0.3-1 THz. The imaging distance is 2.5 m with the field-of-view being 2 m × 1 m. The camera is equipped with a kilo-pixel detector array, large field-of-view optics, intermediate-scale cryogenics operating at 6 K, and low-noise electronics to read out the whole detector array. The imaging capabilities of the system are demonstrated through radiometric performance characterization and actual imaging experiments.
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Juho Luomahaara, Hannu Sipola, Leif Grönberg, Andrey V. Timofeev, Kirsi Tappura, Mika Aikio, Aki P. Mäyrä, Anssi Rautiainen, Visa Vesterinen, Mikko M. Leivo, Feng Gao, Hannu Vasama, Aleksi Tamminen, Arttu R. Luukanen, and Juha Hassel "A fully-staring THz video camera for concealed object detection (Conference Presentation)", Proc. SPIE 11411, Passive and Active Millimeter-Wave Imaging XXIII, 114110J (23 April 2020); https://doi.org/10.1117/12.2558047
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KEYWORDS
Terahertz radiation
Cameras
Video
Imaging systems
Detector arrays
Sensors
Inductance
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