LUMINESCENT PROPERTIES OF Pr3+ IN SBN CRYSTAL

The energy levels of Pr￣(3+) in SBN crystal are determined by means of absorptionspectra and fluorescence spectra. The fluorescence band exhibits a double peak dueto Pr￣(3+) ions at different sites in SBN crystal.This shows that the multiphoton rel-axation of ￣3P_0→￣1D_2 plays a dominant role in the radiationless transition of ￣3P_0 stateof Pr￣(3+) ion by analysing the relation between the fluorescencc lifetime and the sa-mple temperature.