OH detection and spectroscopy by DFWM in flames; comparison with CARS
- 14 March 1992
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 25 (5) , 949-969
- https://doi.org/10.1088/0953-4075/25/5/010
Abstract
This paper presents a study of OH detection by degenerate four-wave mixing (DFWM) in a premixed laminar CH4-air flame, at pressures varying from 1 to 7 bar. The P and Q branches of the A 2 Sigma +-X 2 Pi electronic transition are observed. A spectroscopic study is performed and saturation and pressure effects on the lineshapes and concentration profiles are presented. A preliminary comparison between CARS and DFWM is given.Keywords
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