Developments in people screening using terahertz technology

Colin Baker; William R. Tribe; Bryan E. Cole; Michael C. Kemp

doi:10.1117/12.573603

16 December 2004 Developments in people-screening using terahertz technology

Colin Baker, William R. Tribe, Bryan E. Cole, Michael C. Kemp

Proceedings Volume 5616, Optics and Photonics for Counterterrorism and Crime Fighting; (2004) https://doi.org/10.1117/12.573603
Event: European Symposium on Optics and Photonics for Defence and Security, 2004, London, United Kingdom

Abstract

We describe the latest progress on two new terahertz (THz) prototype systems for security screening applications. Firstly, we show a terahertz stand-off detection system, working at a distance of 0.5 m, and with a dynamic range of ~60 dB. This allows the measurement of spectral features from 0.1 to 2.5 THz. Using this prototype, we present the reflection spectrum of an explosive material collected at 0.5m stand-off and compare it with the predicted spectrum. Secondly, a hand held wand using multiple terahertz detectors has been assembled. This resembles a metal detector wand in operation, and is designed for detecting explosives as well as both metallic and non-metallic weapons hidden under clothing or possibly in bags. The first data from this system is presented, showing that objects can be distinguished using their spectral features.

Citation Download Citation

Colin Baker, William R. Tribe, Bryan E. Cole, and Michael C. Kemp "Developments in people-screening using terahertz technology", Proc. SPIE 5616, Optics and Photonics for Counterterrorism and Crime Fighting, (16 December 2004); https://doi.org/10.1117/12.573603

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