Abstract
A means of performing simultaneous, high-speed measurements of temperature and lifetime-corrected laser-induced fluorescence (LIF) for tracking unsteady flames has been developed and demonstrated. The system uses the frequency-doubled and frequency-tripled output beams of an mode-locked Ti:sapphire laser to achieve ultrashort laser pulses (order ) for Rayleigh-scattering thermometry at and lifetime-corrected LIF at , respectively. Simultaneous, high-speed measurements of temperature and number density enable studies of flame chemistry, heat release, and flame extinction in unsteady, strained flames where the local fluorescence-quenching environment is unknown.
© 2007 Optical Society of America
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