The dependence of the first order Raman scattering efficiency of CaF2, SrF2, BaF2 and diamond on photon energy ωL has been measured with different techniques. We find that in the visible these cross‐sections increase with ωL much faster than ω . This result has important implications as CaF2, for instance, is usually used as a standard scatterer in resonant Raman experiments, with the assumption that its efficiency is excatly proportional to ω . The possible sources of these anomalies are discussed.
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Grimsditch et al. (1981) studied this question.
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