ELECTRONIC RAMAN EFFECT .2. ASYMMETRY OF SCATTERING TENSOR FOR ELECTRONIC RAMAN TRANSITIONS

The theory of electronic Raman scattering for trivalent rare-earth ions in crystals is formulated in a general way. It is shown that vibronic coupling is unimportant. The antisymmetric part of the scattering tensor, which vanishes for vibrational Raman scattering, turns out to be dominant for several electronic Raman transitions. The implications of this with respect to selection rules and depolarization ratios are pointed out.