Quantitative laser measurement of very small absorptions: Studies of the O + CS→CO( V ) + S reaction

An intracavity laser technique has been developed to detect quantitatively very small absorptions by measurements of the laser oscillation range. The technique has been applied to the measurement of the absolute densities of the individual vibrational levels of CO produced from the reaction between...

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Bibliographic Details
Published in:The Journal of chemical physics 1974-01, Vol.60 (11), p.4109-4115
Main Author: Djeu, N.
Format: Article
Language:English
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Summary:An intracavity laser technique has been developed to detect quantitatively very small absorptions by measurements of the laser oscillation range. The technique has been applied to the measurement of the absolute densities of the individual vibrational levels of CO produced from the reaction between O and CS in a fast flow reactor prior to any significant relaxation. Optical losses (or gains) as small as 0.01% were detectable with the present apparatus. The detectivity may be further improved by an order of magnitude with lower loss optics and a more stable laser.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.1680877