Abstract

The purpose of this paper is to show that coherent active (or anti-Stokes) Raman scattering (CARS) can be used as a simple and accurate technique for the temperature determination of moderately heated (up to 1000 K) multiatomic gases. SF₆ has been selected as a representative example. One main advantage of CARS thermometry of multiatomic gases is the fact that no high-spectral-resolution equipment is necessary. Such instrumentation is usually needed to perform CARS thermometry of simple diatomic molecules with a discrete and relatively narrow-band Q-branch spectrum, such as N₂ or O₂.

© 1984 Optical Society of America