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Proceedings Paper

Quantum cascade laser based active hyperspectral imaging for standoff detection of chemicals on surfaces
Author(s): S. Hugger; F. Fuchs; J. Jarvis; Q. K. Yang; M. Rattunde; R. Ostendorf; C. Schilling; R. Driad; W. Bronner; R. Aidam; J. Wagner; T. Tybussek; K. Rieblinger
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Paper Abstract

We employ active hyperspectral imaging using tunable mid-infrared (MIR) quantum cascade lasers for contactless identification of solid and liquid contaminations on surfaces. By collecting the backscattered laser radiation with a camera, a hyperspectral data cube, containing the spatially resolved spectral information of the scene is obtained. Data is analyzed using appropriate algorithms to find the target substances even on substrates with a priori unknown spectra. Eye-save standoff detection of residues of explosives and precursors over extended distances is demonstrated and the main purpose of our system. However, it can be applied to any substance with characteristic reflectance / absorbance spectrum. As an example, we present first results of monitoring food quality by distinguishing fresh and mold contaminated peanuts by their MIR backscattering spectrum.

Paper Details

Date Published: 13 February 2016
PDF: 11 pages
Proc. SPIE 9755, Quantum Sensing and Nano Electronics and Photonics XIII, 97550A (13 February 2016); doi: 10.1117/12.2210913
Show Author Affiliations
S. Hugger, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
F. Fuchs, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
J. Jarvis, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
Q. K. Yang, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
M. Rattunde, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
R. Ostendorf, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
C. Schilling, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
R. Driad, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
W. Bronner, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
R. Aidam, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
J. Wagner, Fraunhofer Institute for Applied Solid State Physics IAF (Germany)
T. Tybussek, Fraunhofer Institute for Process Engineering and Packaging IVV (Germany)
K. Rieblinger, Fraunhofer Institute for Process Engineering and Packaging IVV (Germany)


Published in SPIE Proceedings Vol. 9755:
Quantum Sensing and Nano Electronics and Photonics XIII
Manijeh Razeghi, Editor(s)

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