Increase of the 800 nm excited Tm3+ blue upconversion emission in fluoroindate glasses by codoping with Yb3+ ions

被引：67

作者：

Martín, IR ^{[1
]}

Méndez-Ramos, J

Rodríguez, VD

Romero, JJ

García-Solé, J

机构：

[1] Univ La Laguna, Dpto Fis Fundamental & Expt Elect & Sistemas, E-38206 Tenerife, Spain

[2] Univ Autonoma Madrid, Dpto Fis Mat, Madrid 28049, Spain

来源：

OPTICAL MATERIALS | 2003年 / 22卷 / 04期

关键词：

upconversion; fluoroindate glasses;

D O I：

10.1016/S0925-3467(02)00292-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Intense Tm3+ blue upconversion emission has been observed in Tm3+-Yb3+ codoped fluoroindate glasses under direct excitation into Tm3+ ions with a diode laser at 796 nm. The dependence of the intensity of this upconversion emission on the Tm3+ and Yb3+ concentration has been studied in order to determine the optimum ion concentrations and the involved mechanisms. The blue upconversion emission is highly increased with the Yb3+ concentration. For fixed Yb3+ concentrations, the maximum upconversion efficiency was obtained with Tm3+ concentration of about 0.5 mol%. For this optimum Tm3+ concentration, the upconversion emission intensity is increased by a factor about 100 by codoping with 2.25 mol% of Yb3+. The results are well explained by a proposed rate equation model. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：327 / 333

页数：7

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