Study on Optical Properties and Structure of Sm2O3 Doped Boron-Aluminosilicate Glass

Sm3+ doped B2O3-Al2O3-SiO2 glasses were prepared by high temperature solid-state method. The absorption spectrum, excitation spectrum, emission spectrum and the effect on concentrations of Sm3+ were investigated at room temperature. The results indicated that, under the excitation of 472 nm, the glass gane visible (VIS) and near infra-red (NIR) emissions at 596, 641, 561, 1075, 1118 and 1177 nm, respectively. The optimum concentration of Sm3+ was determined to be 1.0 mol%. On the other hand, magic angle spin nuclear magnetic resonance (MAS NMR) and infrared (IR) spectra were utilized to characterize the the network structures of Sm2O3 doped boron aluminosilicate glasses. The results showed that network units, namely, [SiO4], [BO3], [BO4], [AlO4] existed in Sm3+ doped B2O3-Al2O3-SiO2 glasses, and Sm3+ existed as network modifier. The higher Sm3+ concentration was, the more units of [BO3] would transit to [BO4].