Growth and spectral properties of Er:Gd2SiO5 crystal

Er3+-doped Gd2SiO5 (Er:GSO) single crystal with dimensions of ∅ 35×40 mm3 has been grown by the Czochralski method. The absorption and fluorescence spectra of the Er:GSO crystal were measured at room temperature. The spectral parameters were calculated based on Judd–Ofelt theory, and the intensity parameters Ω2, Ω4 and Ω6 are obtained to be 6.168×10−20, 1.878×10−20, and 1.255×10−20 cm2, respectively. The emission cross-section has been calculated by Fuechtbauer–Ladenbury formula.