22 May 2015 Single-shot stand-off detection of explosives precursors using UV coded aperture Raman spectroscopy
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Abstract
We present preliminary results on the performance of a basic stand-off Raman spectroscopy setup using coded apertures compared to a setup using a round-to-slit fiber for light collection. Measurements were performed using single 5 ns laser shots at 355 nm with a target distance of 5.4 meters on ammonium nitrate powder. The results show an increase in signal-to-noise ratio of 3-8 times when using coded aperture multiplexing compared to the fiber setup.
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M. Svanqvist, M. Svanqvist, M. Nordberg, M. Nordberg, H. Östmark, H. Östmark, } "Single-shot stand-off detection of explosives precursors using UV coded aperture Raman spectroscopy", Proc. SPIE 9455, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVI, 94550Q (22 May 2015); doi: 10.1117/12.2176945; https://doi.org/10.1117/12.2176945
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