Abstract

Spectral overlaps between O atom two-photon transitions and one-photon O₂ and NO transitions near 226 nm have been studied. Excitation of photodissociating O₂ levels can cause anomalously high concentration population measurements of O atoms in flames. We find that excitation of O ³P₁ will minimize the photochemical interference, and the data presented here are necessary to quantify the extent of such effects. Alternatively, these overlaps can be exploited to obtain simultaneous laser-induced fluorescence detection of O, O₂, and NO with a single laser.

© 1989 Optical Society of America

Doppler-free laser-induced fluorescence of oxygen atoms in an atmospheric-pressure flame

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Opt. Lett. 14(1) 12-14 (1989)

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Photochemical effects in 243-nm two-photon excitation of atomic hydrogen in flames

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Photochemical effects in 205-nm, two-photon-excited fluorescence detection of atomic hydrogen in flames

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Photochemical effects in two-photon-excited fluorescence detection of atomic oxygen in flames

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