14 February 2001 High-precision measurements of CO2 concentration in air by means of diode-laser absorption spectroscopy near 2 μm
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Proceedings Volume 4199, Water, Ground, and Air Pollution Monitoring and Remediation; (2001) https://doi.org/10.1117/12.417368
Event: Environmental and Industrial Sensing, 2000, Boston, MA, United States
Abstract
12 A compact and portable laser-based sensor has been developed for absolute measurements of CO2 concentration with high precision and accuracy, in air samples at atmospheric pressure. a DFB diode laser, operating near 2 micrometers at room temperature, was used. It was tuned into resonance with the R(34) line of the v1 + 2v2 degree(s) + v3 combination band. The laser beam was fiber-coupled in order to allow remote operation. Severe tests of the spectrometer were done using certified air mixtures, with the aim to determine its performance. Applications to atmospheric monitoring were discussed. Particularly, the suitability of our spectrometer for measuring soil CO2 efflux was demonstrated.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Restieri, R. Restieri, Gianluca Gagliardi, Gianluca Gagliardi, G. De Biasio, G. De Biasio, F. Cotrufo, F. Cotrufo, Livio Gianfrani, Livio Gianfrani, "High-precision measurements of CO2 concentration in air by means of diode-laser absorption spectroscopy near 2 μm", Proc. SPIE 4199, Water, Ground, and Air Pollution Monitoring and Remediation, (14 February 2001); doi: 10.1117/12.417368; https://doi.org/10.1117/12.417368
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