Influence of composition of Sm₂O₃-containing rare earth glass on its absorption spectrum

Borosilicate glass with high rare earth content was fabricated by traditional method. The influence of glass compositions and rare earth content on absorption spectra was examined and discussed. With increasing Sm₂O₃ content, the intensity of characteristic absorption peak is increased and the absorption peak is broadened. With increasing of the ratios of SiO₂/B₂O₃ and Al₂O₃/SiO₂, the broadening degree of absorption peak is increased. The experimental results provide basis for making special optical glasses which have the characteristics of high absorption for special wavelength laser and high transparence for visible light.