Effect of alkali metal oxides on upconversion fluorescence properties of germanate-tellurite glasses

被引：10
|
作者：
Yang, ZM [1 ]
Jiang, ZH
机构：
[1] S China Univ Technol, Inst Opt Commun Mat, Guangzhou 510641, Peoples R China
[2] Minist Educ, Key Lab Specially Funct Mat & Adv Mfg Technol, Guangzhou 510641, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2004年 / 49卷 / 24期
关键词：
glass; upconversion; alkali metal ions; phonon energy;
D O I：
10.1360/982004-189
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Upconversion emissions of Yb3+/Er3+-codoped germanate-tellurite glasses have been investigated upon the excitation of 980 nm laser diode (LD). It is found that upconversion luminescence intensities significantly increase with the increasing size of alkali metal ions. Raman spectra show that the maximum phonon energies (MPE) of glass hosts are unchanged with the replacement of alkali metal oxides, indicating that MPE is not the reason for the increase of upconversion fluorescence intensities. The analysis of the non-radiative transition of Er3+ demonstrates that the decrease of the maximum energy phonon density is the main reason for the enhanced fluorescence intensities.
引用
收藏
页码：2572 / 2574
页数：3
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