Author/Authors :
Mosses، نويسنده , , R.W and Wells، نويسنده , , J.-P.R and Gallagher، نويسنده , , H.G. and Han، نويسنده , , T.P.J and Yamaga، نويسنده , , M and Kodama، نويسنده , , N and Yosida، نويسنده , , T، نويسنده ,
Abstract :
We report on the Czochralski growth and optical properties of Ho3+- and Er3+-doped strontium lanthanum aluminate (SrLaAlO4) perovskite. Ti-Sapphire laser excitation of the 4I15/2→4I9/2(Er3+) and 5I8→5I4(Ho3+) transitions in Ho3+- and Er3+-doped SrLaAlO4 yields intense green upconversion fluorescence which persists from 10 K through to room temperature. No upconversion fluorescence could be observed for 800 nm excitation of the 3H6→3H4 transitions in Tm3+-doped SrLaAlO4.
