Abstract

The application of tunable diode lasers for in situ diagnostics in laminar hydrocarbon diffusion flames is demonstrated. By the use of both direct-absorption and wavelength-modulation (second-derivative) techniques, carbon monoxide concentrations and the local flame temperature are determined for a laminar methane–air diffusion flame supported on a Wolfhard–Parker slot burner. In both cases the results are found to be in excellent agreement with prior measurements of these quantities using both probe and optical techniques.

© 1993 Optical Society of America

Hydroxyl and its concentration profile in methane–air flames

J. H. Bechtel and R. E. Teets
Appl. Opt. 18(24) 4138-4144 (1979)

Carbon monoxide concentrations and temperature measurements in a low pressure CH₄–O₂–NH₃ flame

B. Rosier, P. Gicquel, D. Henry, and A. Coppalle
Appl. Opt. 27(2) 360-364 (1988)

Application of tunable diode laser diagnostics for temperature and species concentration profiles of inhibited low-pressure flames

Robert G. Daniel, Kevin L. McNesby, and Andrzej W. Miziolek
Appl. Opt. 35(21) 4018-4025 (1996)

Measurements of absolute CH concentrations by cavity ring-down spectroscopy and linear laser-induced fluorescence in laminar, counterflow partially premixed and nonpremixed flames at atmospheric pressure

Sameer V. Naik and Normand M. Laurendeau
Appl. Opt. 43(26) 5116-5125 (2004)

Analysis of laser-induced-fluorescence carbon monoxide measurements in turbulent nonpremixed flames

A. V. Mokhov, H. B. Levinsky, C. E. van der Meij, and R. A. A. M. Jacobs
Appl. Opt. 34(30) 7074-7082 (1995)