期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Enhancement of upconversion luminescence due to the formation of nanocrystals in Er^(3+)-doped tellurite glasses 被引量:2
1
作者 周刚 戴世勋 +4 位作者 于春雷 张军杰 汪国年 温磊 姜中宏 《Chinese Optics Letters》 SCIE EI CAS CSCD 2006年第1期36-38,共3页
Optically transparent Er^3+-doped tellurite-based nanocrystallized glasses with the composition of 70TeO2.15Li2O·15Nb2O5·0.5Er2O3 (mol) have been prepared bv a conventional melting quenching and the subse... Optically transparent Er^3+-doped tellurite-based nanocrystallized glasses with the composition of 70TeO2.15Li2O·15Nb2O5·0.5Er2O3 (mol) have been prepared bv 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 nanoerystallized 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. 展开更多
关键词 Crystal growth ERBIUM Light transmission luminescence of solids MICROHARDNESS Nanostructured materials QUENCHING TELLURIUM X ray diffraction analysis
原文传递
Low threshold Nd^(3+):KY(WO_4)_2 laser operated at 1072 nm pumped by diode
2
作者 林浪 陈振强 +3 位作者 张戈 王如刚 李真 李景照 《Chinese Optics Letters》 SCIE EI CAS CSCD 2007年第10期582-584,共3页
The diode-pumped Nd:KYW laser operated in the free-running mode at 1072 nm is demonstrated at room temperature. The laser output power of 102.6 mW with 12.07% optical-to-optical conversion efficiency and 13.16% slope... The diode-pumped Nd:KYW laser operated in the free-running mode at 1072 nm is demonstrated at room temperature. The laser output power of 102.6 mW with 12.07% optical-to-optical conversion efficiency and 13.16% slope efficiency is obtained. The laser threshold is about 110 mW. Such a low threshold is in agreement with the theoretical prediction. 展开更多
关键词 Conversion efficiency DIODES luminescence of solids Pumping (laser)
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部