Preparation and spectral properties of the Yb3+ doped silicate glass

The Yb³⁺ doped laser glass composed of SiO₂-Li₂O-Na₂O-K₂O-MgO-Al₂O₃-Yb₂O₃ were studied experimentally using the absorption and fluorescence spectrum. And the various spectral parameters of samples were calculated by the reciprocity method, including the absorption cross section, stimulated emission cross-section and fluorescence life time. The result shows that the alkali metal oxides possess different influence on the spectrum and laser parameters of the laser glass. Furthermore, Yb³⁺ doped lithium silicate glass has the larger absorption and emission cross-section and the lower fluorescence lifetime. The kind of glass can inhibit concentration quenching and improve laser performance, which is a high performance laser material for the application of photonic crystal fibre laser.