Spectral and angular dependence of mid-infrared diffuse scattering from explosives residues for standoff detection using external cavity quantum cascade lasers

Jonathan D. Suter; Bruce Bernacki; Mark C. Phillips

doi:10.1007/s00340-012-5134-2

Spectral and angular dependence of mid-infrared diffuse scattering from explosives residues for standoff detection using external cavity quantum cascade lasers

Jonathan D. Suter, Bruce Bernacki, Mark C. Phillips

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

We present a study of the spectral and angular dependence of scattered mid-infrared light from surfaces coated with explosives residues (TNT, RDX, and tetryl) detected at a 2 m standoff distance. An external cavity quantum cascade laser provided tunable illumination between 7 and 8 lm. Important differences were identified in the spectral features between specular reflection and diffuse scattering which will impact most practical testing scenarios and complicate material identification. We discuss some of the factors influencing the dependence of observed spectra on the experimental geometry.

Original language	English (US)
Pages (from-to)	965-974
Number of pages	10
Journal	Applied Physics B: Lasers and Optics
Volume	108
Issue number	4
DOIs	https://doi.org/10.1007/s00340-012-5134-2
State	Published - Sep 2012
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)
General Physics and Astronomy

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Cite this

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title = "Spectral and angular dependence of mid-infrared diffuse scattering from explosives residues for standoff detection using external cavity quantum cascade lasers",

abstract = "We present a study of the spectral and angular dependence of scattered mid-infrared light from surfaces coated with explosives residues (TNT, RDX, and tetryl) detected at a 2 m standoff distance. An external cavity quantum cascade laser provided tunable illumination between 7 and 8 lm. Important differences were identified in the spectral features between specular reflection and diffuse scattering which will impact most practical testing scenarios and complicate material identification. We discuss some of the factors influencing the dependence of observed spectra on the experimental geometry.",

author = "Suter, {Jonathan D.} and Bruce Bernacki and Phillips, {Mark C.}",

note = "Funding Information: We thank Tom Blake and Tim Johnson for providing the samples and the reference FTIR spectra. We thank Daylight Solutions for supplying the quantum cascade laser devices. The research described in this paper was conducted under the Laboratory Directed Research and Development Program at the Pacific Northwest National Laboratory, which is operated for the US Department of Energy by the Battelle Memorial Institute under Contract No. DE-AC05-76RLO1830.",

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AU - Suter, Jonathan D.

AU - Bernacki, Bruce

AU - Phillips, Mark C.

N1 - Funding Information: We thank Tom Blake and Tim Johnson for providing the samples and the reference FTIR spectra. We thank Daylight Solutions for supplying the quantum cascade laser devices. The research described in this paper was conducted under the Laboratory Directed Research and Development Program at the Pacific Northwest National Laboratory, which is operated for the US Department of Energy by the Battelle Memorial Institute under Contract No. DE-AC05-76RLO1830.

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N2 - We present a study of the spectral and angular dependence of scattered mid-infrared light from surfaces coated with explosives residues (TNT, RDX, and tetryl) detected at a 2 m standoff distance. An external cavity quantum cascade laser provided tunable illumination between 7 and 8 lm. Important differences were identified in the spectral features between specular reflection and diffuse scattering which will impact most practical testing scenarios and complicate material identification. We discuss some of the factors influencing the dependence of observed spectra on the experimental geometry.

AB - We present a study of the spectral and angular dependence of scattered mid-infrared light from surfaces coated with explosives residues (TNT, RDX, and tetryl) detected at a 2 m standoff distance. An external cavity quantum cascade laser provided tunable illumination between 7 and 8 lm. Important differences were identified in the spectral features between specular reflection and diffuse scattering which will impact most practical testing scenarios and complicate material identification. We discuss some of the factors influencing the dependence of observed spectra on the experimental geometry.

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Spectral and angular dependence of mid-infrared diffuse scattering from explosives residues for standoff detection using external cavity quantum cascade lasers

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