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Spectroscopic properties of Sm3+-doped phosphate glasses

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, Δ T ( T x − T g ) of these glasses is about 290 °C, which guarantees their thermal stability against crystallization during the fiber drawing process.