Resonance electronic Raman scattering in rare earth crystals

The intensities of Raman scattering transitions between electronic energy levels of trivalent rare earth ions doped into transparent crystals were measured and compared to theory. A particular emphasis was placed on the examination of the effect of intermediate state resonances on the Raman scattering intensities. Two specific systems were studied: Ce;In Ce;Electronic Raman scattering from Ce;In addition to the measurement of relative electronic Raman scattering intensities, values for the absolute electronic Raman scattering cross-sections were obtained through a calibration of the collection efficiency of the detection system using standards with known scattering cross-sections. It was found that the measured cross-sections were smaller than the calculated cross-sections by factors ranging from approximately 5 to 10.;An intra-configurational (4f...