Simultaneous excitation of Ce3+ and Eu3+ ions in Tb3Al5O12

Y3Al5O12:Ce3+ (YAG:Ce) and Tb3Al5O12:Ce3+ (TAG:Ce) both show the typical Ce3+ ion luminescence ofthe allowedCe3+ d–ftransition. Eu3+ codoping, however, reveals di:erent results for both matrices: in YAG:Ce,Eu, only the luminescenceofthe Ce3+ ion occurs by excitation within the Ce3+ absorption bands. Here, the Eu3+ luminescence cannot be sensitizedby the Ce3..