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- W1994157519 abstract "This paper describes the design of a deep-UV Raman imaging spectrometer operating with an excitation wavelengthof 228 nm. The designed system will provide the ability to detect explosives (both traditional military explosivesand home-made explosives) from standoff distances of 1-10 meters with an interrogation area of 1 mm x 1 mm to200 mm x 200 mm. This excitation wavelength provides resonant enhancement of many common explosives, nobackground fluorescence, and an enhanced cross-section due to the inverse wavelength scaling of Raman scattering.A coded-aperture spectrograph combined with compressive imaging algorithms will allow for wide-areainterrogation with fast acquisition rates. Coded-aperture spectral imaging exploits the compressibility ofhyperspectral data-cubes to greatly reduce the amount of acquired data needed to interrogate an area. The resultantsystems are able to cover wider areas much faster than traditional push-broom and tunable filter systems. The fullsystem design will be presented along with initial data from the instrument. Estimates for area scanning rates andchemical sensitivity will be presented. The system components include a solid-state deep-UV laser operating at 228nm, a spectrograph consisting of well-corrected refractive imaging optics and a reflective grating, an intensifiedsolar-blind CCD camera, and a high-efficiency collection optic." @default.
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- W1994157519 date "2012-05-01" @default.
- W1994157519 modified "2023-09-23" @default.
- W1994157519 title "Coded-aperture Raman imaging for standoff explosive detection" @default.
- W1994157519 doi "https://doi.org/10.1117/12.919292" @default.
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