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

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.