Standoff explosives detector using deep-UV Raman spectroscopy
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United States of America Patent
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Mar 4, 2014
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app pub date -
Jun 1, 2011
filing date -
Aug 17, 2010
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Abstract
A method of performing Raman spectroscopy, and an apparatus for performing the method, including irradiating, with laser light, a trace amount of a target substance disposed on a painted surface, receiving reflected laser light and a Raman return signal from the trace amount of the target substance, processing the Raman return signal using, at least, a spectrograph and camera to obtain a Raman signature for the target substance, and identifying the target substance based on the Raman signature for the target substance and a database of Raman signatures. The laser light wavelength may be selected based on a ratio of Raman return signal power to fluorescence power.
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