Time-Resolved Picosecond Pure-Rotational Coherent anti-Stokes Raman Spectroscopy for Thermometry and Species Concentration in Combustion Environments

Time-resolved picosecond pure-rotational coherent anti-Stokes Raman spectroscopy is applied for thermometry and 1-D imaging in flames. Time-delaying the probe pulse enables successful suppression of unwanted resonant and non-resonant four wave mixing background signals.