Pilot investigations on solids, liquids and gases using a portable shifted excitation Raman difference spectroscopy sensor system

M. Maiwald; K. Sowoidnich; B. Sumpf

doi:10.1117/12.2649696

16 March 2023 Pilot investigations on solids, liquids and gases using a portable shifted excitation Raman difference spectroscopy sensor system

M. Maiwald, K. Sowoidnich, B. Sumpf

Author Affiliations +

Proceedings Volume 12396, Plasmonics in Biology and Medicine XX; 1239602 (2023) https://doi.org/10.1117/12.2649696
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Raman investigations are carried out to evaluate potential real-world application fields using an in-house developed portable shifted excitation Raman difference spectroscopy (SERDS) system at 785 nm. Pilot Raman measurements are performed in the presence of background light, laser-induced fluorescence, within optically turbid media and of weak Raman scatterers i.e., ambient air gases. In the presence of background light and laser-induce fluorescence, SERDS separates Raman signals of soil substances with a 15-fold improvement of the signal-to-background noise. Ingredients of bovine milk as the optically turbid test sample are clearly detected and identified. Ambient air gases are investigated even under daylight conditions. The results show the potential of the portable SERDS sensor systems for real-world applications,

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Citation Download Citation

M. Maiwald, K. Sowoidnich, and B. Sumpf "Pilot investigations on solids, liquids and gases using a portable shifted excitation Raman difference spectroscopy sensor system", Proc. SPIE 12396, Plasmonics in Biology and Medicine XX, 1239602 (16 March 2023); https://doi.org/10.1117/12.2649696

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