Interference free spontaneous Raman spectroscopy for measurements in rich hydrocarbon flames

G. Magnotti*, D. Geyer, R. S. Barlow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


The capability to simultaneously acquire two orthogonal components of a Raman spectrum has been added to the Sandia Raman/Rayleigh/CO-LIF instrument for combustion measurements. This addition allows removing unpolarized fluorescence interference signal from Raman spectra, extending the applicability of the instrument to rich hydrocarbon flames. The optical set-up and the data analysis approach are described. The instrument is tested in challenging rich laminar and turbulent CH4/air flames, deemed inaccessible with the previous instrument. Experimental results show good agreement with laminar calculations performed with Chemkin. The approach also avoids the cumbersome calibration and correction procedures required for data collected with the previous version of the instrument in presence of mild fluorescence interference. The drawback is a drop in the instrument precision, in particular for CO2 and O2 concentrations.

Original languageEnglish (US)
Pages (from-to)3765-3772
Number of pages8
JournalProceedings of the Combustion Institute
Issue number3
StatePublished - 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.


  • 1D Raman spectroscopy
  • Diagnostics
  • Interference
  • Turbulent flames

ASJC Scopus subject areas

  • General Chemical Engineering
  • Mechanical Engineering
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Interference free spontaneous Raman spectroscopy for measurements in rich hydrocarbon flames'. Together they form a unique fingerprint.

Cite this