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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 11 — Apr. 10, 2008
  • pp: 1893–1901

Validation of a rotational coherent anti-Stokes Raman spectroscopy model for carbon dioxide using high-resolution detection in the temperature range 294 1143 K

Fredrik Vestin, Kristin Nilsson, and Per-Erik Bengtsson  »View Author Affiliations


Applied Optics, Vol. 47, Issue 11, pp. 1893-1901 (2008)
http://dx.doi.org/10.1364/AO.47.001893


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Abstract

Experiments were performed in the temperature range of 294 1143 K in pure CO 2 using high-resolution rotational coherent anti-Stokes Raman spectroscopy (CARS), in the dual-broadband approach. Experimental single-shot spectra were recorded with high spectral resolution using a single-mode Nd:YAG laser and a relay imaging lens system on the exit of a 1 m spectrometer. A theoretical rotational CARS model for CO 2 was developed for evaluation of the experimental spectra. The evaluated mean temperatures of the recorded single-shot dual-broadband rotational coherent anti-Stokes Raman spectroscopy (DB-RCARS) spectra using this model showed good agreement with thermocouple temperatures, and the relative standard deviation of evaluated single-shot temperatures was generally 2–3%. Simultaneous thermometry and relative CO 2 / N 2 -concentration measurements were demonstrated in the product gas of premixed laminar CO/air flames at atmospheric pressure. Although the model proved to be accurate for thermometry up to 1143 K , limitations were observed at flame temperatures where temperatures were overestimated and relative CO 2 / N 2 concentrations were underestimated. Potential sources for these discrepancies are discussed.

© 2008 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(190.1900) Nonlinear optics : Diagnostic applications of nonlinear optics
(300.6390) Spectroscopy : Spectroscopy, molecular
(300.6450) Spectroscopy : Spectroscopy, Raman

ToC Category:
Spectroscopy

History
Original Manuscript: December 17, 2007
Manuscript Accepted: February 16, 2008
Published: April 4, 2008

Citation
Fredrik Vestin, Kristin Nilsson, and Per-Erik Bengtsson, "Validation of a rotational coherent anti-Stokes Raman spectroscopy model for carbon dioxide using high-resolution detection in the temperature range 294-1143 K," Appl. Opt. 47, 1893-1901 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-11-1893

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