J. Phys. IV France 04 (1994) C4-329-C4-332
Spectroscopic properties of Fe3+ in GGG and the effect of co-doping with rare-earth ionsV. LUPEI1, M.J. ELEJALDE2, A. BRENIER3 and G. BOULON3
1 Institute of Atomic Physics, 76900 Bucharest, Romania
2 Universidad del Pais Vasco, ETSIIT, 48013 Bilbao, Spain
3 Université Claude Bernard Lyon I, LPCML, URA 442 du CNRS, 69622 Villeurbanne, France
The spectroscopic properties of Fe3+ in tetrahedral d-sites of GGG and the effect of co-doping with Tm3+ are investigated. It is thus shown that a very efficient energy transfer from Fe3+ (d) to Tm3+ takes place due to a good superposition of Fe emission and Tm [MATH] absorption spectra and due to a favorable packing of the d-sites around the dodecahedral site occupied by Tm. It was also found that the Fe-sensitized luminescence of Tm has different spectral and temporal characteristics from the normal emission of this ion in GGG.
© EDP Sciences 1994