Decay Kinetics of Gd 3 Al 2 Ga 3 O 12 :Ce 3+ Luminescence under Dense Laser Irradiation.

The decay kinetics of Gd 3 Al 2 Ga 3 O 12 :Ce 3+ single crystal luminescence were studied under dense laser excitation. It was shown that the decay times as well as the intensity of Ce 3+ luminescence depend on the excitation density. The observed effects were ascribed to the interaction between excitons as well as to the features of energy transfer from the excitons to Ce 3+ . The numerical simulation of the experimental results was performed for justification of the proposed model.