Precision of multiplex CARS temperatures using both single-mode and multimode pump lasers

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TypeArticle
Journal titleApplied Optics
Volume26
Issue1
Pages99110; # of pages: 12
AbstractThe noise level in single-pulse resonant nitrogen CARS spectra is shown to decrease with increasing pump laser bandwidth. This is the reverse of the trend observed for nonresonant CARS spectra. The precision of single-pulse CARS temperature measurements is shown to be dramatically increased by performing a weighted fit of theoretical and experimental CARS spectra using the measured detector noise coefficients as weighting parameters. The inclusion of collisional narrowing and cross-coherence in the CARS theory calculations and their effect on best fit temperatures are discussed. These temperatures, measured in a flat-flame burner, are compared with those obtained by Na line-reversal.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NRC number52305
NPARC number16352296
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Record identifier1304bff5-a0d1-4bab-bfdb-1c3a97a24955
Record created2010-11-09
Record modified2016-05-09
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