Polarized spectroscopic properties of Er3+:BaGd2(MoO4)4 crystal

An Er3+:BaGd2(MoO4)4 single crystal has been grown by the Czochralski method. The polarized absorption spectra, polarized fluorescence spectra, and fluorescence decay curves were measured. In the framework of Judd–Ofelt theory, intensity parameters, spontaneous emission probabilities, fluorescence branching ratios, and radiative lifetimes were calculated. Besides, green upconversion fluorescence was also observed.

► An Er3+:BaGd2(MoO4)4 single crystal was grown by the Czochralski technique.
► The polarized spectroscopic properties of Er3+:BaGd2(MoO4)4 crystal were studied.
► The crystal exhibits large emission cross section and broad bandwidth around 1.55 μm.
► The results reveal that Er3+:BaGd2(MoO4)4 crystal is a potential laser material.