MEASUREMENT OF OH ROTATIONAL TEMPERATURES IN A FLAME USING DEGENERATE 4-WAVE MIXING

被引:120
作者
DREIER, T
RAKESTRAW, DJ
机构
[1] Combustion Research Facility, Sandia National Laboratories, Livermore, CA
关键词
D O I
10.1364/OL.15.000072
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Temperatures have been measured in a laminar premixed propane–air diffusion flame using degenerate four-wave mixing (DFWM) of the OH radical. The spectra were recorded simultaneously with laser-induced fluorescence through the (0, 0) band of the OH A2Σ-X2II transition. Individual rotational lines are more clearly resolved in the DFWM spectrum than in the laser-induced fluorescence spectrum, although both are power broadened at laser intensities of 1-2 MW/cm2 at 307 nm. Rotational temperatures have been determined from the DFWM spectra and are in close agreement with temperatures measured with coherent anti-Stokes Raman spectroscopy of nitrogen. © 1990 Optical Society of America.
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页码:72 / 74
页数:3
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