23 April 2010 Investigations for real-time Raman measurements in the deep ocean by applying a 1.5 W BA DFB diode laser and long optical fibers
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Abstract
Raman spectroscopy is a powerful tool to obtain "fingerprint" spectra from substances in numerous applications. In-situ and/or real time measurements are interesting for the detection of minerals, organic compounds, gas hydrates or methane in the deep-ocean. In this work we present Raman measurements of selected minerals. A DFB diode laser at 785 nm was used as excitation light source with an output power up to 1.5 W. An excitation fiber of 1000 m length was used to demonstrate the suitability of Raman spectroscopy for deep-sea applications.
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Heinz-Detlef Kronfeldt, Heinz-Detlef Kronfeldt, Martin Maiwald, Martin Maiwald, Hossam Ahmad, Hossam Ahmad, Heinar Schmidt, Heinar Schmidt, Klaus Wohlfart, Klaus Wohlfart, Bernd Sumpf, Bernd Sumpf, Andreas Klehr, Andreas Klehr, Götz Erbert, Götz Erbert, } "Investigations for real-time Raman measurements in the deep ocean by applying a 1.5 W BA DFB diode laser and long optical fibers", Proc. SPIE 7673, Advanced Environmental, Chemical, and Biological Sensing Technologies VII, 76730B (23 April 2010); doi: 10.1117/12.853073; https://doi.org/10.1117/12.853073
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