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Proceedings Paper

High-precision measurements of CO2 concentration in air by means of diode-laser absorption spectroscopy near 2 um
Author(s): R. Restieri; Gianluca Gagliardi; G. De Biasio; F. Cotrufo; Livio Gianfrani
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Paper 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.

Paper Details

Date Published: 14 February 2001
PDF: 6 pages
Proc. SPIE 4199, Water, Ground, and Air Pollution Monitoring and Remediation, (14 February 2001); doi: 10.1117/12.417368
Show Author Affiliations
R. Restieri, Seconda Univ. di Napoli (Italy)
Gianluca Gagliardi, Seconda Univ. di Napoli (Italy)
G. De Biasio, Seconda Univ. di Napoli (Italy)
F. Cotrufo, Seconda Univ. di Napoli (Italy)
Livio Gianfrani, Seconda Univ. di Napoli (Italy)

Published in SPIE Proceedings Vol. 4199:
Water, Ground, and Air Pollution Monitoring and Remediation
Tuan Vo-Dinh; Robert L. Spellicy, Editor(s)

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