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22 January 2010 Imaging stand-off detection of explosives using tunable MIR quantum cascade lasers
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Abstract
Results on the detection of traces of trinitrotoluene (TNT) on different substrate-materials like Aluminum and standard car paint are presented. We investigated different samples with a movable imaging standoff detection system at angles of incidence far away from specular reflection. The samples were illuminated with a tunable mid-infrared external-cavity quantum cascade laser. For collection of the diffusely backscattered light a highperformance infrared imager was used. Trace concentrations of TNT corresponding to fingerprints on realworld- substrates were detected, while false alarms of cross-contaminations were successfully suppressed.
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Frank Fuchs, Borislav Hinkov, Stefan Hugger, Jan M. Kaster, Rolf Aidam, Wolfgang Bronner, Klaus Köhler, Quankui Yang, Sven Rademacher, Kai Degreif, Frank Schnürer, and Wenka Schweikert "Imaging stand-off detection of explosives using tunable MIR quantum cascade lasers", Proc. SPIE 7608, Quantum Sensing and Nanophotonic Devices VII, 760809 (22 January 2010); https://doi.org/10.1117/12.840464
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