Abstract
Two-dimensional imaging of OH radicals in a premixed CH4/O2 flame by polarization spectroscopy is reported. Polarization spectroscopy was applied in a copropagating geometry with linearly polarized pump and probe beams. The images were measured with the laser frequency tuned to resonance with the Q1(9) A2Σ−X2Π(0, 0) transition of OH. The signal dependence on the crossing angle between the pump and probe beams was also studied. The possibilities for two-dimensional temperature mapping were demonstrated by measuring images at two different rotational lines and by extracting the temperature map from these measurements.
© 1993 Optical Society of America
Full Article | PDF ArticleMore Like This
K. Nyholm, R. Maier, C. G. Aminoff, and M. Kaivola
Appl. Opt. 32(6) 919-924 (1993)
Bengt Löfstedt, Rolf Fritzon, and Marcus Aldén
Appl. Opt. 35(12) 2140-2146 (1996)
Mark J. Dyer and David R. Crosley
Opt. Lett. 7(8) 382-384 (1982)