OPTICAL SPECTROSCOPY OF TM3+ DOPED IN KLA(MOO4)(2) CRYSTALS

The optical properties of Tm3+ doped KLa(MoO4)(2) single crystals have been measured at various temperatures between 10 and 298 K. All the o bserved bands are inhomogeneously broadened as an effect of the random distribution of the K+ and La3+ (Tm3+) ions in the scheelite crystal lattice. The intensities of the absorption transitions have been analy zed by means of the Judd-Ofelt theory. The spontaneous transition prob ability, the branching ratios and the radiative lifetimes have been de termined for the most important emitting states using the calculated i ntensity parameters. They are in good agreement with the experimental results. A structural analysis of the crystal lattice is also reported . (C) 1997 Elsevier Science Ltd.