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Measurement of temperature profile of a gaseous flame with a Lau phase interferometer that has circular gratings

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Abstract

We have investigated the utility of a Lau phase interferometer with circular gratings and a white-light source to measure the temperature and temperature profile of an axisymmetric flame. The temperature measured with a Lau phase interferometer is in good agreement with the temperature measured with a thermocouple and multilogger. Detailed theoretical analysis and experimental investigation are presented.

© 2002 Optical Society of America

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