Experiments have been performed to investigate the possibility of detecting low concentrations of SO<sub>2</sub> using CARS spectroscopy. The experiments were also aimed at high-temperature investigations both in a heated cell and in a flame. During the cell measurements it was clearly revealed that the temperature has a dramatic influence on the shape of the CARS spectra, indicating a good potential for thermometry using SO<sub>2</sub> and CARS spectroscopy.
Marcus Aldén and Wilhelm Wendt, "Application of CARS Spectroscopy to the Detection of SO2," Appl. Spectrosc. 42, 1421-1427 (1988)