Spectroscopic properties of Sm~(3+)-doped phosphate glasses

摘要

We report on the absorption, static, and transient luminescence spectra of Sm~(3+)-doped glasses. The dependences between absorption and emission cross sections as well as between luminescence quantum efficiencies and Sm~(3+) doping concentration are examined. The large stimulated absorption cross section and emission cross section combined with the long fluorescent lifetime make phosphate glasses doped with Sm~(3+) promising material for visible fiber lasers. Moreover, ΔT(T_x -T_g) of these glasses is about 290 ℃, which guarantees their thermal stability against crystallization during the fiber drawing process.