Enhanced ~2.7 µm emission investigation of Er3+:4I11/2→4I13/2 transition in Yb,Er,Pr:SrLaGa3O7 crystal

As compared with Er: SrLaGa3O7 crystal, ~2.7 µm MIR emissions corresponding to Er3+:4I11/2→4I13/2 transition were enhanced in Yb3+, Er3+ and Pr3+ triply doped SrLaGa3O7 crystal owing to the sensitization of co-dopant Yb3+ via ET1, at the same time, ~1.5 µm NIR emissions were weakened owing to the depopulation of co-dopant Pr3+ via ET3.258