摘要
我们以前对非晶 ＺＢＬＡＮ光纤玻璃中掺杂稀土离子 Ｅｒ_（３＋）的转换发光的研究表明，在室温、大功率半导体激光器的激发下，Ｅｒ_（３＋）的荧光主要是通过单离子步进双光子过程发生的，而其多光子过程虽然非常微弱，但在强的半导体激光的照射下也可产生．通过Ｙｂ_（３＋）的掺杂敏化，Ｅｒ_（３＋）的各条荧光谱线都有不同程度的增强，而且增强幅度极大，产生了迄今为止我们所知的最强的绿光发射， Ｅｒ离子的蓝、紫外的发光也得到子测量．这说明 Ｙｂ_（３＋）对 Ｅｒ_（３＋）的上转换荧光过程有着强烈的敏化作用，这一现象的应用前景有待进一步开拓．
Based upon our studies on luminescence of Er in ZBLAN fiber glass before, we demonstrated that,at room temperature,luminescence of Er is resulted from the single-ionic sequential two-photon processes,respectively. The multiphoton process is very weak under the powerful excitation of diode laser. However,much stronger green-blue emissions have been observed in ZBLAN noncrystals codoped with Er and Yb. These emissions are the strongest ones of our known's. Energy transfers and back transfers are responsible for the upconversion process,and in three-photon process, back transfer is more obvious than that in two-photon process.
出处
《光子学报》
EI
CAS
CSCD
1997年第3期248-251,共4页
Acta Photonica Sinica
基金
国家自然科学基金
国家教委跨世纪人才基金
关键词
激发态
频率
上转换
半导体激光器
光纤玻璃
Frequency upconversion of excited state
Diode laser
Energy transfers among ions
