Collisional Raman linewidths of nitrogen at high temperature (1700-2400 K)

New high-temperature measurements of collisional linewidths of the Raman Q branch of nitrogen have been performed at 1700-2400 K with stimulated Raman spectroscopy in a tungsten filament. We fitted these data together with previous data obtained in the 295-1500-K range to redetermine the parameters...

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Bibliographic Details
Published inOptics letters Vol. 20; no. 10; p. 1189
Main Authors Lavorel, B, Guillot, L, Bonamy, J, Robert, D
Format Journal Article
LanguageEnglish
Published United States 15.05.1995
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Summary:New high-temperature measurements of collisional linewidths of the Raman Q branch of nitrogen have been performed at 1700-2400 K with stimulated Raman spectroscopy in a tungsten filament. We fitted these data together with previous data obtained in the 295-1500-K range to redetermine the parameters of the relaxation models used in coherent anti-Stokes Raman spectroscopy thermometry. The improvement in the accuracy of the temperature measurement has been checked. Semiclassical calculations of linewidths in the 1700-2400-K range agree with the experimental data and have been extended to even higher temperatures.
ISSN:0146-9592
DOI:10.1364/OL.20.001189