LASER SELECTIVE EXCITATION AND ENERGY-TRANSFER IN A MULTISITE SYSTEM - CAF2-PR3+

Polarized laser selective excitation and polarized time-resolved laser selective excitation (P.T.R.L.S.E.) experiments have been performed on CaF2 samples doped with Pr3+, at various temperatures. These techniques allowed us to put in evidence the existence of four different sites, whereas PTRLSE clearly shows the occurrence of an energy transfer process between two different sites which we analyse in the light of recent theories. © 1979.