J. Phys. IV France 04 (1994) C4-407-C4-410
Multisite structure of optical spectra of activators in garnet crystalsV. LUPEI1, A. LUPEI1 and G. BOULON2
1 Institute of Atomic Physics, Bucharest 76900, Romania
2 Université Claude Bernard Lyon I, LP-CML, UA 442 du CNRS, 69622 Villeurbanne, France
The analysis of selective excitation and emission spectra of Tm3+ in YAG and GGG laser systems is presented. The observed multisite structure is assigned to non-stoichiometric defects. Up to six centers are separated, with complex spectra connected with lowering of the local symmetry.
© EDP Sciences 1994