Cavity-Enhanced Raman Spectroscopy for Food Chain Management

Comprehensive food chain management requires the monitoring of many parameters including temperature, humidity, and multiple gases. The latter is highly challenging because no low-cost technology for the simultaneous chemical analysis of multiple gaseous components currently exists. This contributio...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2018-02, Vol.18 (3), p.709
Main Authors: Sandfort, Vincenz, Goldschmidt, Jens, Wöllenstein, Jürgen, Palzer, Stefan
Format: Article
Language:English
Subjects:
Carbon Dioxide
cavity
ethene
Ethylene
Food Chain
food chain management
Food chains
Gases
Monitoring
optical resonator
Optical resonators
Oxygen
Raman spectroscopy
Spatial distribution
Spectrum analysis
Spectrum Analysis, Raman
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Summary:Comprehensive food chain management requires the monitoring of many parameters including temperature, humidity, and multiple gases. The latter is highly challenging because no low-cost technology for the simultaneous chemical analysis of multiple gaseous components currently exists. This contribution proposes the use of cavity enhanced Raman spectroscopy to enable online monitoring of all relevant components using a single laser source. A laboratory scale setup is presented and characterized in detail. Power enhancement of the pump light is achieved in an optical resonator with a Finesse exceeding 2500. A simulation for the light scattering behavior shows the influence of polarization on the spatial distribution of the Raman scattered light. The setup is also used to measure three relevant showcase gases to demonstrate the feasibility of the approach, including carbon dioxide, oxygen and ethene.
ISSN:1424-8220
1424-8220
DOI:10.3390/s18030709