文献类型：期刊文献

英文题名：Infrared luminescence of Tm³⁺/Yb³⁺ codoped lanthanum aluminum germanate glasses

作者：Zhang, Qiang[1,2];Chen, Guorong[3];Zhang, Guang[1,2];Qiu, Jianrong[4];Chen, Danping[1]

机构：[1]Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat Sci & Technol High Power Lasers, Shanghai 201800, Peoples R China;[2]Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China;[3]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[4]Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

年份：2010

卷号：107

期号：2

外文期刊名：JOURNAL OF APPLIED PHYSICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000274180600002)】；

基金：The authors would like to acknowledge financial support from the National Natural Science Foundation of China (Grant Nos. 60878043, 50911140475, and 60707019).

语种：英文

外文关键词：aluminium compounds; doping profiles; germanate glasses; infrared spectra; Judd-Ofelt theory; lanthanum compounds; luminescence; melt processing; thulium compounds; ytterbium compounds

摘要：Tm3+ doped and Tm3+/Yb3+ codoped lanthanum aluminum germanate (LAG) glasses are prepared by melt-quenching method and characterized optically. Based on the measurement of absorption spectrum, Judd-Ofelt intensity parameters ((2),(4),(6)) are calculated. The radiation emission rates, branching ratios, and lifetimes of Tm3+ are calculated to evaluate the spectroscopic properties of Tm3+ in LAG glass. The infrared emission properties of the samples are investigated and the results show that the 1.8 mu m emission can be greatly enhanced by adding proper amount of Yb3+ under the excitation of 980 nm. The energy transfer processes of Yb3+-Yb3+ and Yb3+-Tm3+ are analyzed, and the results show that Yb3+ ions can transfer their energy to Tm3+ ions with high efficiency and large energy transfer coefficient.