Abstract

Simultaneous measurements of temperature and relative concentrations of fuel, oxygen, and nitrogen using combined vibrational coherent anti-Stokes Raman Spectroscopy (CARS) and dual-broad-band rotational CARS have been demonstrated with the use of a Nd:YAG laser and a single dye laser. With the use of a double-folded BOXCARS phase-matching scheme, both the vibrational and the rotational CARS signals were generated in such a way that the signals were superimposed at the spectrograph. With an additional mirror arrangement inside the spectrograph, both signals were recorded simultaneously on a single diode-array detector. The accuracy of single-shot fuel concentration measurements has been investigated, and measurements in a methane/air diffusion flame have been demonstrated. The influence of systematic errors on measured concentrations is discussed.

Simultaneous vibrational and pure rotational coherent anti-Stokes Raman spectroscopy for temperature and multispecies concentration measurements demonstrated in sooting flames

Christian Brackmann, Joakim Bood, Per-Erik Bengtsson, Thomas Seeger, Martin Schenk, and Alfred Leipertz
Appl. Opt. 41(3) 564-572 (2002)

Simultaneous temperature and sensitive two-species concentration measurements by single-shot CARS

Michel Pealat, P. Magre, P. Bouchardy, and G. Collin
Appl. Opt. 30(10) 1263-1273 (1991)

Simultaneous temperature and relative nitrogen–oxygen concentration measurements in air with pure rotational coherent anti-Stokes Raman scattering for temperatures to as high as 2050 K

Albert Thumann, Martin Schenk, Joachim Jonuscheit, Thomas Seeger, and Alfred Leipertz
Appl. Opt. 36(15) 3500-3505 (1997)

Multipoint temperature and oxygen-concentration measurements using rotational coherent anti-Stokes Raman spectroscopy

Joakim Bood, Christian Brackmann, Per-Erik Bengtsson, and Marcus Aldén
Opt. Lett. 25(20) 1535-1537 (2000)

Dual-pump coherent anti-Stokes Raman scattering measurements of nitrogen and oxygen in a laminar jet diffusion flame

Robert D. Hancock, Frederick R. Schauer, Robert P. Lucht, and Roger L. Farrow
Appl. Opt. 36(15) 3217-3226 (1997)