Passive mm-wave imager using HTS Josephson junction detectors

Richard Humphreys; Phil Hirst; Ryan Heath; Dave Elliner; Nick Parker; Mark A. G. Smith

doi:10.1117/12.578531

8 December 2004 Passive mm-wave imager using HTS Josephson junction detectors

Richard Humphreys, Phil Hirst, Ryan Heath, Dave Elliner, Nick Parker, Mark A. G. Smith

Proceedings Volume 5619, Passive Millimetre-Wave and Terahertz Imaging and Technology; (2004) https://doi.org/10.1117/12.578531
Event: European Symposium on Optics and Photonics for Defence and Security, 2004, London, United Kingdom

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.

Citation Download Citation

Richard Humphreys, Phil Hirst, Ryan Heath, Dave Elliner, Nick Parker, and 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); https://doi.org/10.1117/12.578531

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