Abstract

A four-wave difference mixing signal has been observed for what is, to our knowledge, the first time, in sodium in a methane–air flame. The experimental conditions used to observe the signal in the flame are reported. An explanation of the observed signal in terms of near two photon resonant difference four-wave mixing is proposed.

© 1992 Optical Society of America

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

P. Ewart and S. V. O’Leary
Opt. Lett. 11(5) 279-281 (1986)

Elemental analysis by doubly resonant four-wave mixing in Na-seeded flames

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Degenerate four-wave mixing temperature measurements in a flame

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Two-dimensional mapping of temperature in a flame by degenerate four-wave mixing in OH

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Multiplex degenerate four-wave mixing in a flame

P. Ewart and P. Snowdon
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