Abstract
It is demonstrated that precise spontaneous Raman scattering measurements with deep-UV lasers are in principle possible in hydrocarbon flames - even with liquid fuels - by the use of polarization properties. In contrast to the highly polarized Raman emission, the strong interfering broadband emission from combustion intermediates is unpolarized. Subtracting the emission intensities for the electric vector of the laser light perpendicular and parallel to the direction of observation allows to extract the pure Raman signals. Different applications of this technique are discussed.
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Grünefeld, G., Beushausen, V. & Andresen, P. Interference-free UV-laser-induced Raman and Rayleigh measurements in hydrocarbon combustion using polarization properties. Appl. Phys. B 61, 473–478 (1995). https://doi.org/10.1007/BF01081276
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DOI: https://doi.org/10.1007/BF01081276