Abstract
We present the theory of two-photon Raman saturation of a two-level Raman transition studied by an independent CARS process. The main goal here is to probe the saturated homogeneous Raman line shape. It is shown that there appears a saturation dip with a width determined by the relaxation timeT 1. In the case of Doppler-broadened line the coherent Raman saturation spectroscopy may be used to determine both theT 1 andT 2 relaxation times.
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