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Proceedings Paper

Investigations for real-time Raman measurements in the deep ocean by applying a 1.5 W BA DFB diode laser and long optical fibers
Author(s): Heinz-Detlef Kronfeldt; Martin Maiwald; Hossam Ahmad; Heinar Schmidt; Klaus Wohlfart; Bernd Sumpf; Andreas Klehr; Götz Erbert
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Paper 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.

Paper Details

Date Published: 23 April 2010
PDF: 8 pages
Proc. SPIE 7673, Advanced Environmental, Chemical, and Biological Sensing Technologies VII, 76730B (23 April 2010); doi: 10.1117/12.853073
Show Author Affiliations
Heinz-Detlef Kronfeldt, Technische Univ. Berlin (Germany)
Martin Maiwald, Technische Univ. Berlin (Germany)
Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
Hossam Ahmad, Technische Univ. Berlin (Germany)
Heinar Schmidt, Technische Univ. Berlin (Germany)
Klaus Wohlfart, Univ. Bremen (Germany)
Bernd Sumpf, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
Andreas Klehr, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)
Götz Erbert, Ferdinand-Braun-Institut für Höchstfrequenztechnik (Germany)

Published in SPIE Proceedings Vol. 7673:
Advanced Environmental, Chemical, and Biological Sensing Technologies VII
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)

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