Multisites Cr3+ in GGG and GSGG garnets |
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| Authors: | Monteil A Nie W Madej C Boulon G |
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| Institution: | 1.Laboratoire de Physico-Chimie des Matériaux Luminescents,Université Lyon 1, Unité Associée au CNRS,Villeurbanne,France |
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| Abstract: | The emission and excitation spectra of Cr3+ -doped Gd3Ga5O12 (GGG) and Gd3Sc2Ga3O12 (GSGG) are explained in the light of multisite effects. The situation is particularly complicated in the case of GSGG, where the different sites have2E energy levels near each other which overlap with the4A2 →4T2 absorption bands. The spectra obtained under selective excitations are interpreted on the multisite assumption. |
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