Abstract

We investigate two-photon laser-induced fluorescence imaging of atomic hydrogen in premixed flames using picosecond- and nanosecond-duration laser pulses. Picosecond excitation produces significantly larger signals for interference-free detection in CH<sup>4</sup>/O<sup>2</sup>/N<sup>2</sup>and H<sup>2</sup>/O<sup>2</sup>flames.

© 2008 Optical Society of America

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