LUMINESCENCE OF SM-2+-DOPED FLUORIDE GLASSES

被引:43
|
作者
IZUMITANI, T [1 ]
PAYNE, SA [1 ]
机构
[1] LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550
关键词
D O I
10.1016/0022-2313(93)90002-5
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We have investigated the optical properties of Sm2+-doped fluoride glasses having three different compositions. The absorption and emission spectra reveal that the immediate fluorine environment surrounding the Sm2+ ion is nearly identical for the three glass compositions, and is probably characterized by a high coordination number. The emission yield, on the other hand, is sensitively dependent on the composition of the glasses. It is theorized that the interaction of the host conduction band with the 4f(5)5d and 5D0 states is largely responsible for opening up a nonradiative decay pathway from the 5D0 emitting level, to the 7F ground state levels. As a consequence, the glasses based on heavy metal ions give smaller emission yields than those primarily based on smaller cations.
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收藏
页码:337 / 344
页数:8
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