Abstract

The background radiation disturbance in luminous environments has been compared for degenerate four-wave mixing (DFWM) and laser-induced fluorescence (LIF) for OH radical detection in a sooty propane/ oxygen flame. The LIF signal generally was considerably stronger than the DFWM signal, but in strongly sooty environments the LIF signal was accompanied by a significant background signal, while the DFWM signal was background-free under all soot loads tested.

Measurement of OH rotational temperatures in a flame using degenerate four-wave mixing

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Detection of OH in a flame by degenerate four-wave mixing

P. Ewart and S. V. O’Leary
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Detection of methyl radicals in a flat flame by degenerate four-wave mixing

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Multiplex degenerate four-wave mixing in a flame

P. Ewart and P. Snowdon
Opt. Lett. 15(23) 1403-1405 (1990)

Degenerate four-wave mixing temperature measurements in a flame

B. Yip, P. M. Danehy, and R. K. Hanson
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