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Stand-off Raman detection using dispersive and tunable filter based systems.

J Chance Carter·Jon Scaffidi·Shana Burnett·Bryan Vasser·Shiv K Sharma·S Michael Angel
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Abstract

Small, transportable Raman systems are being developed for stand-off Raman measurements at intermediate ranges (e.g. <20 m) for planetary measurements. Four variations of stand-off Raman systems are described that use a small telescope for light collection that is either fiber-optic or lens-coupled to a detection system. The performance of an acousto-optic tunable filter for wavelength selection and spectral imaging is tested by comparing signal-to-noise ratio and throughput to similar measurements using a conventional spectrograph, and by measuring a variety of organic and inorganic mineral samples at distances up to 15 m. We also determine optimal ICCD gate widths for acquiring remote Raman spectra under high ambient light conditions.

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FiltrationMarsMineralsSpectrum Analysis, RamanComparative StudyJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.

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J Chance Carter, Jon Scaffidi, Shana Burnett, Bryan Vasser, Shiv K Sharma, S Michael Angel. 2005. Stand-off Raman detection using dispersive and tunable filter based systems.. https://doi.org/10.1016/j.saa.2005.02.028

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