Investigating the Dy3+→Tb3+ energy transfer dynamics in YAG ceramics and crystals

Le résumé fourni par la source

: A detailed study of the emission dynamics in high-optical-quality YAG ceramics singly and co-doped with Dy 3+ and Tb 3+ has been carried out in order to investigate the energy transfer processes between the two ions which may influence the potential of (Dy,Tb):YAG as a yellow laser medium. The excited state dynamics of Dy 3+ and Tb 3+ were studied at room temperature under different experimental conditions to confirm the positive effect of the Tb 3+ co-doping on the Dy 3+ 4 F 9/2 → 6 H 13/2 yellow emission channel. Finally, the results obtained in YAG ceramics were compared to those obtained in YAG crystals grown by the μ-pulling down method with the same Dy 3+ and Tb 3+ co-doping levels.

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