OH-thermometry using laser polarization spectroscopy and laser-induced fluorescence spectroscopy in the OH A-X (1,0) band

J. Kiefer, A. Meyerhoefer, T. Seeger, A. Leipertz, Zhongshan Li, M. Alden

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18 Citations (Scopus)

Abstract

Laser-induced fluorescence (LIF) and polarization spectroscopy (PS) is used for OH-thermometry utilizing the off-diagonal A-X (1,0) band. Both techniques are used simultaneously in order to allow a comparison of the results. For deriving temperature information from the spectra, three methods are employed: (1) a contour fit method comparing experimental and calculated spectra, (2) spectral fitting of a single highly resolved spectral line and (3) a two-line intensity ratio approach. In general, both spectroscopic techniques gave similar results. The high-resolution approach (2) did not deliver reasonable results in our experiments. The most accurate but also most time consuming method was the contour fit (1). For future two-dimensional temperature measurements, the 2-line-method (3) was identified to be the method of choice. The present study contains, to the best of our knowledge, the first polarization spectroscopic study in the A-X (1,0) band of OH. Copyright (C) 2009 John Wiley Sons, Ltd.
Original languageEnglish
Pages (from-to)828-835
Number of pages8
JournalJournal of Raman Spectroscopy
Volume40
Issue number7
Early online date27 Feb 2009
DOIs
Publication statusPublished - 1 Jul 2009
Event7th European Conference on Nonlinear Optical Spectroscopy (ECNOS)/1st European Conference on CARS Microscopy, Igls - , Austria
Duration: 25 May 200827 May 2008

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Keywords

  • polarization spectroscopy
  • laser-induced fluorescence
  • hydroxyl
  • OH
  • thermometry

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