【作者】 李毅刚； 刘丽英； 侯占佳； 徐雷； 王文澄；

【Author】 LI Yi-gang, LIU Li-ying, HOU Zhan-jia, XU Lei, WANG Wen-cheng(State Key Lab for Advanced Photonic Materials and Demees, Department of Optical Science & Engineering,Fudan University, Shanghai 200433, China)

【机构】 复旦大学信息学院光科学与工程系先进光子学材料与器件国家重点实验室；

【摘要】 用溶胶-凝胶方法合成了掺饵含量为5×10^-3（Er/si摩尔比）的二氧化硅凝胶玻璃。研究了不同温度条件下用四氯化碳除水处理的效果。结果表明在900℃下,四氯化碳可以很好地去除样品中的羟基,而且荧光寿命与样品中水的含量表现出明显的关联性。经过处理的样品在室温下使用978nm激光抽运,测得1550nm的荧光寿命大于6ms。更多还原

【Abstract】 Er-doped silica glasses (5×10-3 Er/Si mol) were prepared by sol-gel method. Gel samples underwent dehydration in carbon tetrachloride environment. It shows that carbon tetrachloride can remove hydroxyl group effectively, as a result, I13/2-I15/2 fluorescence lifetime rises quickly. It is also found that fluorescence lifetime is strongly dependent on OH" concentration. For samples annealed in carbon tetrachloride at 900 t;, fluorescence lifetime as long as 6ms was reached.更多还原