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Proceedings Paper

Explosive detection using infrared laser spectroscopy
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Paper Abstract

Stand-off and extractive explosive detection methods for short distances are investigated using mid-infrared laser spectroscopy. A quantum cascade laser (QCL) system for TATP-detection by open path absorption spectroscopy in the gas phase was developed. In laboratory measurements a detection limit of 5 ppm*m was achieved. For explosives with lower vapor pressure an extractive hollow fiber based measurement system was investigated. By thermal desorption gaseous TATP or TNT is introduced into a heated fiber. The small sample volume and a fast gas exchange rate enable fast detection. TNT and TATP detection levels below 100 ng are feasible even in samples with a realistic contaminant background.

Paper Details

Date Published: 26 January 2009
PDF: 12 pages
Proc. SPIE 7222, Quantum Sensing and Nanophotonic Devices VI, 72220B (26 January 2009); doi: 10.1117/12.808976
Show Author Affiliations
J. Hildenbrand, Fraunhofer Institute for Physical Measurement Techniques (Germany)
J. Herbst, Fraunhofer Institute for Physical Measurement Techniques (Germany)
J. Wöllenstein, Fraunhofer Institute for Physical Measurement Techniques (Germany)
A. Lambrecht, Fraunhofer Institute for Physical Measurement Techniques (Germany)


Published in SPIE Proceedings Vol. 7222:
Quantum Sensing and Nanophotonic Devices VI
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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