8 December 2004 Passive mm-wave imager using HTS Josephson junction detectors
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Abstract
Passive mm-wave imaging has great potential for all-weather flying aids and security applications. To achieve useful real time images of an ambient temperature scene, >100 detectors are required, and uptake of the technology has been limited by the high cost of detectors. We propose a novel, cost effective solution using integrated arrays of antenna-coupled HTS Josephson junction video detectors. Arrays of 16 antenna coupled YBa2Cu3O7 interface engineered junctions have been fabricated with a design centre frequency of ~100GHz, optically immersed behind a single lens. Detector characteristics have been compared to stochastic RCSJ model simulations, with the antenna represented by an equivalent circuit. A real time demonstration imager has been built, and the first images obtained.
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Richard Humphreys, Richard Humphreys, Phil Hirst, Phil Hirst, Ryan Heath, Ryan Heath, Dave Elliner, Dave Elliner, Nick Parker, Nick Parker, Mark A. G. Smith, Mark A. G. Smith, } "Passive mm-wave imager using HTS Josephson junction detectors", Proc. SPIE 5619, Passive Millimetre-Wave and Terahertz Imaging and Technology, (8 December 2004); doi: 10.1117/12.578531; https://doi.org/10.1117/12.578531
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