Standoff imaging of chemicals using IR spectroscopy

Marissa E. Morales-Rodríguez; Larry R. Senesac; Thomas Thundat; Michael K. Rafailov; Panos G. Datskos

doi:10.1117/12.885204

13 May 2011 Standoff imaging of chemicals using IR spectroscopy

Marissa E. Morales-Rodríguez, Larry R. Senesac, Thomas Thundat, Michael K. Rafailov, Panos G. Datskos

Proceedings Volume 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III; 80312D (2011) https://doi.org/10.1117/12.885204
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Here we report on a standoff spectroscopic technique for identifying chemical residues on surfaces. A hand-held infrared camera was used in conjunction with a wavelength tunable mid-IR quantum cascade laser (QCL) to create hyperspectral image arrays of a target with an explosive residue on its surface. Spectral signatures of the explosive residue (RDX) were extracted from the hyperspectral image arrays and compared with a reference spectrum. Identification of RDX was achieved for residue concentrations of 20 μg per cm² at a distance of 1.5 m, and for 5 μg per cm² at a distance of 15 cm.

Citation Download Citation

Marissa E. Morales-Rodríguez, Larry R. Senesac, Thomas Thundat, Michael K. Rafailov, and Panos G. Datskos "Standoff imaging of chemicals using IR spectroscopy", Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, 80312D (13 May 2011); https://doi.org/10.1117/12.885204

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