Temperature measurement by degenerate four-wave mixing with strong absorption of the excitation beams.
We have made simultaneous temperature measurements by degenerate four-wave mixing (DFWM) and absorption spectroscopy of OH in a CH(4)-air, lifted-diffusion flame. After we corrected the DFWM data for laser beam absorption of as much as 60%, the DFWM-based temperatures were in good agreement with temperatures derived strictly from the absorption data, as well as a one-dimensional reacting flow simulation.
G C
GC
Herring
W L
WL
Roberts
M S
MS
Brown
P A
PA
Debarber