Translator Disclaimer
29 June 2001 v3 band of methane molecule with tunable diode laser absorption spectroscopy
Author Affiliations +
Proceedings Volume 4430, ROMOPTO 2000: Sixth Conference on Optics; (2001) https://doi.org/10.1117/12.432901
Event: ROMOPTO 2000: Sixth Conference on Optics, 2000, Bucharest, Romania
Abstract
Tunable diode laser spectrometers are extensively used for the monitoring of trace gases in the atmosphere. We present the results of experimental researches on atmospheric methane concentration, responsible for industrial pollution in Tunisia. Pulsed and tunable, 3.31 micrometers lead salt, single mode, cryogenically cooled diode laser was employed. Evolution of the laser signal corresponding to methane absorption was observed. The gas to be sampled flows through an optical cell or in open-atmosphere-path. Detection was carried out by observing infrared absorption lines. An acquisition system was developed and data were stored and treated online. Traces of methane at the level of 100 ppb could be detected. This gives access to information involving methane concentration in local atmosphere.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mourad Zghal, Mokhtar Saidi, Zohra Ben Lakhdar, and Ammar Bouallegue "v3 band of methane molecule with tunable diode laser absorption spectroscopy", Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); https://doi.org/10.1117/12.432901
PROCEEDINGS
6 PAGES


SHARE
Advertisement
Advertisement
Back to Top