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 (σemi) and σemi × τ of Yb3+ in the YAP1 glass are 1.00 pm2 and 0.94 pm2·ms, respectively. Co-doping with Al and P decreases the hydroxyl group content in the glasses because of the reduction in non-bridging oxygen content. The lowest OH content in the YAP3 glass is 9.6 ppm.
© 2012 Chinese Optics Letters
Shaojun Liu, Haiyuan Li, Yongxing Tang (/[, ) , and Lili Hu, "Fabrication and spectroscopic properties of Yb3+-doped silica glasses using the sol-gel method," Chin. Opt. Lett. 10, 081601- (2012)