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30 May 2022 Fibre enhanced Raman spectroscopy for detecting atmospheric and (climate) harmful gases
Tim Kutz, Christian Niklas, Hainer Wackerbarth, Georgios Ctistis
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Proceedings Volume PC12139, Optical Sensing and Detection VII; PC121390D (2022) https://doi.org/10.1117/12.2621225
Event: SPIE Photonics Europe, 2022, Strasbourg, France
Abstract
In this work, we show a gas detection system based on fiber enhanced Raman spectroscopy intended to be used in rapid detection of gas mixtures. Here, a photonic crystal fibre (HCPCF) is used for Raman enhancement. The HCPCF acts as a multi-pass cavity, increases the energy density and Raman scattering efficiency in the core. The band gap of the HCPCF used is centred around 800 nm. Furthermore, a solid state diode laser with an emission wavelength at 785 nm is used. Measurements are made on atmospheric gases as well as CH4 and NH3 with varying fibre length, integration time and analyte concentration.
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Tim Kutz, Christian Niklas, Hainer Wackerbarth, and Georgios Ctistis "Fibre enhanced Raman spectroscopy for detecting atmospheric and (climate) harmful gases", Proc. SPIE PC12139, Optical Sensing and Detection VII, PC121390D (30 May 2022); https://doi.org/10.1117/12.2621225
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KEYWORDS
Raman spectroscopy
Gases
Climatology
Atmospheric monitoring
Atmospheric sensing
Environmental sensing
Spectroscopic atmospheric monitoring techniques
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