Enhancement of upconversion luminescence due to the formation of nanocrystals in Er3+-doped tellurite glasses

被引：0

作者：

周刚 ^{[1
]}

戴世勋 ^{[2
]}

于春雷 ^{[1
]}

张军杰 ^{[3
]}

汪国年 ^{[1
]}

温磊 ^{[3
]}

姜中宏 ^{[3
]}

机构：

[1] Laser Glass Laboratory,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800 Graduate School of the Chinese Academy of Sciences,Beijing 100049 2. Laser Glass Lab

来源：

Chinese Optics Letters | 2006年 / 01期

基金：

中国国家自然科学基金;

关键词：

doped tellurite glasses; Enhancement of upconversion luminescence due to the formation of nanocrystals in Er;

D O I：

暂无

中图分类号：

TQ171.1 [基础理论];

学科分类号：

0805 ; 080502 ;

摘要：

Optically transparent Er3+-doped tellurite-based nanocrystallized glasses with the composition of 70TeO2·15Li2O·15Nb2O5·0.5Er2O3 (mol) have been prepared by a conventional melting quenching and the subsequent heat treatment processes. The sizes of grown nanocrystals in glass matrix appear to be 35-50 nm from the X-ray diffraction (XRD) measurement. The microhardness measurement shows that the Vickers hardness values of the nanocrystallized tellurite glasses are larger (33%-62%) than those in the base glass. The Raman spectra imply that the maximum phonon energy of the based glass decreases and shifts from 668 to 638 cm-1 after heat-treatment. Visible upconversion luminescence and infrared luminescence of the base glass and heat-treated glasses under 980-nm laser diode (LD) excitation are investigated. The 524-, 546- and 656-nm upconversion intensities by 980-nm pumping increase significantly.

引用

页码：36 / 38

页数：3