v3 band of methane molecule with tunable diode laser absorption spectroscopy

Mourad Zghal; Mokhtar Saidi; Zohra Ben Lakhdar; Ammar Bouallegue

doi:10.1117/12.432901

29 June 2001 v₃ band of methane molecule with tunable diode laser absorption spectroscopy

Mourad Zghal, Mokhtar Saidi, Zohra Ben Lakhdar, Ammar Bouallegue

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.

Citation Download Citation

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

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available