Hyperspectral microscopy using an external cavity quantum cascade laser and its applications for explosives detection

M. C. Phillips; J. D. Suter; B. E. Bernacki

doi:10.1117/12.907488

20 January 2012 Hyperspectral microscopy using an external cavity quantum cascade laser and its applications for explosives detection

M. C. Phillips, J. D. Suter, B. E. Bernacki

Author Affiliations +

Proceedings Volume 8268, Quantum Sensing and Nanophotonic Devices IX; 82681R (2012) https://doi.org/10.1117/12.907488
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Using infrared hyperspectral imaging, we demonstrate microscopy of small particles of the explosives compounds RDX, tetryl, and PETN with near diffraction-limited performance. The custom microscope apparatus includes an external cavity quantum cascade laser illuminator scanned over its tuning range of 9.13-10.53 μm in four seconds, coupled with a microbolometer focal plane array to record infrared transmission images. We use the hyperspectral microscopy technique to study the infrared absorption spectra of individual explosives particles, and demonstrate sub-nanogram detection limits.

Citation Download Citation

M. C. Phillips, J. D. Suter, and B. E. Bernacki "Hyperspectral microscopy using an external cavity quantum cascade laser and its applications for explosives detection", Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82681R (20 January 2012); https://doi.org/10.1117/12.907488

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