Saturation effect of up-conversion luminescence from erbium-doped,silicatitania sol-gel powders

作     者：Jesús Castaeda 

作者机构：Guadalajara University Los Lagos University Center 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2011年第29卷第5期

页      面：420-425页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：erbium up-conversion luminescence saturation rare earths 

摘      要：The intensity of the visible up-conversion luminescence could be limited by a saturation effect produced by increased pump power. Visible up-conversion luminescence was obtained in erbium doped,silica-titania sol gel powders under dynamical pumping at 1532 nm. The saturation effect was studied for erbium radiative transitions 2H9/2→4I15/2 （410 nm）,2H11/2→4I15/2 （530 nm）,4S3/2→4I15/2 （550 nm）,2H9/2→4I13/2 （567 nm） and 4F9/2→4I15/2 （675 nm）. The recorded up-conversion luminescence decreased when increasing excitation power. The results suggested that the saturation effect was determined by the pump power,the sample composition and the lifetimes of the corresponding first excited states.