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Proceedings Paper

Standoff detection of explosives with broad band tunable external cavity quantum cascade lasers
Author(s): F. Fuchs; S. Hugger; M. Kinzer; Q. K. Yang; W. Bronner; R. Aidam; K. Degreif; S. Rademacher; F. Schnürer; W. Schweikert
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Paper Abstract

We present standoff detection of various explosives by backscattering spectroscopy, using a sensing system based on mid-IR external-cavity quantum cascade lasers (EC-QCL) with a broad tunable range of about 300 cm-1. Traces of TNT (trinitrotoluene), PETN (pentaerythritol tetranitrate) and RDX (cyclotrimethylenetrinitramine) as well as different nonhazardous substances were investigated by illuminating them with the EC-QC laser and collecting the diffusely backscattered light. Tuning the EC-QCL across the characteristic absorption spectra enables us to detect and identify the explosives against a background of non-hazardous materials.

Paper Details

Date Published: 20 January 2012
PDF: 9 pages
Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82681N (20 January 2012); doi: 10.1117/12.908119
Show Author Affiliations
F. Fuchs, Fraunhofer Institute for Applied Solid State Physics (Germany)
S. Hugger, Fraunhofer Institute for Applied Solid State Physics (Germany)
M. Kinzer, Fraunhofer Institute for Applied Solid State Physics (Germany)
Q. K. Yang, Fraunhofer Institute for Applied Solid State Physics (Germany)
W. Bronner, Fraunhofer Institute for Applied Solid State Physics (Germany)
R. Aidam, Fraunhofer Institute for Applied Solid State Physics (Germany)
K. Degreif, Fraunhofer Institute for Physical Measurement Techniques (Germany)
S. Rademacher, Fraunhofer Institute for Physical Measurement Techniques (Germany)
F. Schnürer, Fraunhofer Institute for Chemical Technology (Germany)
W. Schweikert, Fraunhofer Institute for Chemical Technology (Germany)


Published in SPIE Proceedings Vol. 8268:
Quantum Sensing and Nanophotonic Devices IX
Manijeh Razeghi; Eric Tournie; Gail J. Brown, Editor(s)

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