CARS at a "hard-to-realize conditions": lineshape spectroscopy at high temperatures in a real flame

On the example of the study of the collisional broadening and shift of the hydrogen Q-branch lines due to collisions with water molecules in wide temperatures range [2000 K -3000 K], we display the use of single-short CARS-spectroscopy for lineshape analisys at experimental conditions in which the object naturally does not exist, but can be created due to some physical and/or chemical processes for some time, small in comparison with the time necessary for stationary laboratory researches. Importance of light statistics as well as some specific features of CARS spectroscopy, which are the most actual from the point of view of use of CARS as a tool for lineshape spectroscopy, are discussed.