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Proceedings Paper

LWIR hyperspectral micro-imager for detection of trace explosive particles
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Paper Abstract

Chemical micro-imaging is a powerful tool for the detection and identification of analytes of interest against a cluttered background (i.e. trace explosive particles left behind in a fingerprint). While a variety of groups have demonstrated the efficacy of Raman instruments for these applications, point by point or line by line acquisition of a targeted field of view (FOV) is a time consuming process if it is to be accomplished with useful spatial resolutions. Spectrum Photonics has developed and demonstrated a prototype system utilizing long wave infrared hyperspectral microscopy, which enables the simultaneous collection of LWIR reflectance spectra from 8-14 μm in a 30 x 7 mm FOV with 30 μm spatial resolution in 30 s. An overview of the uncooled Sagnac-based LWIR HSM system will be given, emphasizing the benefits of this approach. Laboratory Hyperspectral data collected from custom mixtures and fingerprint residues is shown, focusing on the ability of the LWIR chemical micro-imager to detect chemicals of interest out of a cluttered background.

Paper Details

Date Published: 21 May 2014
PDF: 7 pages
Proc. SPIE 9101, Next-Generation Spectroscopic Technologies VII, 91010Z (21 May 2014); doi: 10.1117/12.2050824
Show Author Affiliations
Adam L. Bingham, Spectrum Photonics, Inc. (United States)
Paul G. Lucey, Spectrum Photonics, Inc. (United States)
Univ. of Hawai'i at Manoa (United States)
Jason T. Akagi, Spectrum Photonics, Inc. (United States)
John L. Hinrichs, Spectrum Photonics, Inc. (United States)
Edward T. Knobbe, Spectrum Photonics, Inc. (United States)

Published in SPIE Proceedings Vol. 9101:
Next-Generation Spectroscopic Technologies VII
Mark A. Druy; Richard A. Crocombe, Editor(s)

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