Growth and property enhancement of Er3+-doped 0.68Pb(Mg1/3Nb2/3)O3-0.32PbTiO3 single crystal

Er-doped PMN-32PT single crystal exhibited upconversion emission properties. The green (531 and 552 nm) and red (670 nm) emission bands were recorded under 980 nm diode laser excitation, corresponding to the transitions of 2H11/2 → 4I15/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 of Er3+. In addition, the fluorescence intensities of the green and red emissions increased with the excitation power increasing.139