飞秒激光诱导Dy^3＋掺杂玻璃的上转换发光  

Upconversion Luminescence of Dy^3＋ Doped Glass by Femtosecond Laser Irradiation

作　　者：张松敏[1] 李倩[1] 朱斌[1] 周时凤[1] 邱建荣[1] 

机构地区：[1]浙江大学硅材料国家重点实验室,杭州310027

出　　处：《武汉理工大学学报》2007年第E01期327-330,共4页Journal of Wuhan University of Technology

基　　金：国家基金委自然科学基金（50672087）和国家科技部973项目（2006CB806000b）

摘　　要：研究了飞秒激光诱导Dy^3＋掺杂ZnO-B2O3-SiO2玻璃的上转换过程，通过分析800nm飞秒激光泵浦功率和荧，光发射强度之间的关系以及吸收光谱，从机理上阐述了此上转换过程为双光子同时吸收的过程。Upconversion luminescence is observed in Dy^3＋ doped ZnO-B2O3-SiO2 glass under femtosecond laser irradiation. The dependence of the fluorescence intensity of Dy^3＋ on the pump power indicates that a two-photon absorption process is dominant in the conversion of infrared radiation to the visible luminescence. The analysis of the upconversion mechanism reveals that the simultaneous absorption of two infrared photons produces the population of upper excited states, which leads to the characteristic red emission of Dy^3＋.

关 键 词：飞秒激光 双光子同时吸收 上转换发光 

分 类 号：TQ171[化学工程—玻璃工业]