Fabrication and spectroscopic properties of Yb3+ doped silica glasses using the

Two series of Yb3+-doped silica glasses (YA and YAP) are fabricated using the sol-gel method, and their spectroscopic properties are investigated. The longest fluorescence lifetime of 0.96 ms is obtained in YAP2 and YAP3 glasses. The emission cross-section (emi) and emi × of Yb3+ in the YAP1 glass a