966nm半导体激光激发下ErYb:ZBLAN玻璃的上转换特征饱和现象  

The Upconversion "Characteristic Saturation Phenomenon" of ErYb:ZBLAN Glass Excited by 966 nm Diode Laser

作　　者：陈晓波[1] 李美仙[1] 郝昭 孟广政[2] 宋增福[3] 

机构地区：[1]北京师范大学光学中心,北京100875 [2]北京钢铁研究总院,北京100081 [3]北京大学物理系,北京100871

出　　处：《光谱学与光谱分析》2001年第3期271-274,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金!(198740 33);中科院物理所光物理实验室开放课题;中科院半导体所集成光电子学国家重点联合实验室开放课题;国家

摘　　要：本文研究了单掺Er和ErYb共掺的ZBLAN玻璃的上转换发光现象 ,发现了一种新颖的“Er(0 3)Yb(0 5 ) :ZBLAN样品上转换发光强度随激光功率变化的双对数曲线的斜率相对于Er(0 3) :ZBLAN样品有明显的降低、但都保持着很好的直线”的这种“特征”饱和现象 ,它的上转换机制是一种新颖的“扩散 传递”机制 :即Yb3+ Yb3+间能量扩散和随后的Yb3 + Er3 +间能量传递。其“特征”饱和现象就是由“Yb3+ Yb3+”This paper researches the upconversion luminescence of Er:ZBLAN and ErYb:ZBLAN glasses excited by 966 nm diode laser.It is found that there is a new kind of ″characteristic saturation phenomenon″.It is that the log log plot′s slope of upconversion luminescence intensity upon laser power of ErYb:ZBLAN glass is decreased clearly than that of Er:ZBLAN,and both of their log log plots are rather good straight line.This upconversion mechanism is a new kind of ″diffusion transfer″ mechanism,that is energy diffusion among Yb 3+ ions sequential followed by energy transfer between Er 3+ Yb 3+ ions.The ″characteristic saturation phenomenon″ is just resulted from energy diffusion.

关 键 词：ZBLAN玻璃 镱化铕 掺杂 激光激发 “特征”饱和现象 “扩散-传递”机制 上转换发光 铕 

分 类 号：TQ171.112[化学工程—玻璃工业] O482.31[化学工程—硅酸盐工业]