Thermal effect on multiphonon-assisted anti-Stokes excited upconversion fluorescence emission in Yb3+-sensitized Er3+-doped optical fiber

被引：56

作者：

Jacinto, C ^{[1
]}

de Araujo, MT ^{[1
]}

Gouveia, EA ^{[1
]}

Gouveia-Neto, AS ^{[1
]}

机构：

[1] Univ Fed Alagoas Maceio, Dept Fis, BR-57072970 Maceio, AL, Brazil

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2000年 / 70卷 / 02期

关键词：

D O I：

10.1007/s003400050030

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The temperature effect upon infrared-to-visible frequency upconversion fluorescence emission in Yb3+-sensitized Er3+-doped germanosilicate optical fibers excited with cw radiation at 1.064 mu m is investigated. The experimental results revealed an eightfold enhancement in the visible upconversion emission intensity as the fiber temperature was increased from 17 degrees C to 180 degrees C. The fluorescence emission enhancement is attributed to the temperature-dependent multiphonon-assisted anti-Stokes excitation process of the ytterbium sensitizer. A theoretical approach that takes into account a sensitizer absorption cross-section, which depends on the phonon occupation number, has proven to agree very well with the experimental data.

引用

页码：185 / 188

页数：4

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