Thermographic system with a laser scanning device

Skvortsov, L A; Kirillov, V. M.

doi:10.1070/qe2007v037n11abeh013619

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…For example, a highspeed electromechanical scanning device, which made it possible to study an area ~1 m 2 in size at a distance of ~20 m, was used in [56]. At the same time, the possibility of applying electronic scanning (acousto-optical deflector operating in the near-IR spectral range, with a scan angle of 4 ´ 10 -2 rad in each coordinate) was analysed in [57].…”

Section: Discussionmentioning

confidence: 99%

Active spectral imaging for standoff detection of explosives

Skvortsov¹

2011

Quantum Electron.

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Laser methods of standoff detection of explosive traces on surfaces of objects are considered. These methods are based on active formation of multi-and hyperspectral images of an object examined. The possibilities of these methods and the prospects of their development are discussed. Emphasis is laid on the justification of the most preferred field of application of the technique under consideration.

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Section: Discussionmentioning

confidence: 99%

Active spectral imaging for standoff detection of explosives

Skvortsov¹

2011

Quantum Electron.

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Laser photothermal spectroscopy of light-induced absorption

Skvortsov¹

2013

Quantum Electron.

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Infrared photothermal imaging spectroscopy for detection of trace explosives on surfaces

et al. 2015

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We are developing a technique for the standoff detection of trace explosives on relevant substrate surfaces using photothermal infrared (IR) imaging spectroscopy (PT-IRIS). This approach leverages one or more compact IR quantum cascade lasers, which are tuned to strong absorption bands in the analytes and directed to illuminate an area on a surface of interest. An IR focal plane array is used to image the surface and detect increases in thermal emission upon laser illumination. The PT-IRIS signal is processed as a hyperspectral image cube comprised of spatial, spectral, and temporal dimensions as vectors within a detection algorithm. The ability to detect trace analytes at standoff on relevant substrates is critical for security applications but is complicated by the optical and thermal analyte/substrate interactions. This manuscript describes a series of PT-IRIS experimental results and analysis for traces of RDX, TNT, ammonium nitrate, and sucrose on steel, polyethylene, glass, and painted steel panels. We demonstrate detection at surface mass loadings comparable with fingerprint depositions ( 10μg/cm2 to 100μg/cm2) from an area corresponding to a single pixel within the thermal image.

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Thermographic system with a laser scanning device

Cited by 3 publications

References 3 publications

Active spectral imaging for standoff detection of explosives

Active spectral imaging for standoff detection of explosives

Laser photothermal spectroscopy of light-induced absorption

Infrared photothermal imaging spectroscopy for detection of trace explosives on surfaces

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