Abstract

The accuracy of temperature and simultaneous relative N₂–O₂ concentration measurements of accumulated as well as of single-pulse rotational coherent anti-Stokes Raman spectra has been investigated in air in the temperature range from 300 to 2050 K. The experimental spectra were taken in a high-temperature oven at atmospheric pressure for a constant oxygen concentration of 20.9% (air). The evaluation procedure is based on the energy-corrected sudden-power scaling law. The agreement of the thermocouple readings with the mean values of the evaluated coherent anti-Stokes Raman spectroscopy temperatures is higher than 50 K and independent of the temperature. The evaluated oxygen concentration is found to be in the range from 20.0 to 21.7% and is also independent of the temperature.

© 1997 Optical Society of America

Simultaneous temperature and relative O₂–N₂ concentration measurements by single-shot pure rotational coherent anti-Stokes Raman scattering for pressures as great as 5 MPa

Martin Schenk, Thomas Seeger, and Alfred Leipertz
Appl. Opt. 39(36) 6918-6925 (2000)

Pure rotational coherent anti-Stokes Raman scattering: comparison of evaluation techniques for determining single-shot simultaneous temperature and relative N₂–O₂ concentration

Martin Schenk, Albert Thumann, Thomas Seeger, and Alfred Leipertz
Appl. Opt. 37(24) 5659-5671 (1998)

Simultaneous and time-resolved temperature and relative CO₂–N₂ and O₂–CO₂–N₂ concentration measurements with pure rotational coherent anti-Stokes Raman scattering for pressures as great as 5 MPa

Martin Schenk, Thomas Seeger, and Alfred Leipertz
Appl. Opt. 44(26) 5582-5593 (2005)

Experimental comparison of single-shot broadband vibrational and dual-broadband pure rotational coherent anti-Stokes Raman scattering in hot air

Thomas Seeger and Alfred Leipertz
Appl. Opt. 35(15) 2665-2671 (1996)

Accuracy and precision of single-pulse one-dimensional vibrational coherent anti-Stokes Raman-scattering temperature measurements

J. Jonuscheit, A. Thumann, M. Schenk, T. Seeger, and A. Leipertz
Appl. Opt. 36(15) 3253-3260 (1997)