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Journal of Materials Science

, Volume 42, Issue 3, pp 747–751 | Cite as

Upconversion emissions in Yb3+–Tm3+-doped tellurite glasses excited at 976 nm

  • Guonian WangEmail author
  • Shixun Dai
  • Junjie Zhang
  • Jianhu Yang
  • Zhonghong Jiang
Article

Abstract

Intense Tm3+ blue upconversion emission has been observed in Tm3+–Yb3+ codoped oxyfluoride tellurite glass under excitation with a diode laser at 976 nm. Three emission bands centered at 475, 650 and 796 nm corresponding to the transitions 1G43H6, 1G43H4 and 3F43H6, respectively, simultaneously occur. The dependence of upconversion intensities on Tm3+ ions concentration and excitation power are investigated. For fixed Yb2O3 concentrations of 5.0 mol%, the maximum upconversion intensity was obtained with Tm2O3 concentration of about 0.1 mol%. The blue upconversion luminescence lifetimes of the Tm3+ transitions 1G43H6 are measured. The results are evaluated by the possible upconversion mechanisms.

Keywords

Tellurite Glass Upconversion Luminescence Upconversion Emission Tm2O3 Upconversion Mechanism 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We would like to express our thanks to Mr. Wen L for optical spectra tests and to Dr. Yang J H for useful discussion. This research was financially supported by “Qimingxing” Project (No. 04QMX1448) of the Shanghai Municipal Science and Technology Commission and by the Chinese National Natural Science Foundation (Grant 60607014 and Grant 50572110).

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Guonian Wang
    • 1
    • 2
    Email author
  • Shixun Dai
    • 1
  • Junjie Zhang
    • 1
  • Jianhu Yang
    • 1
  • Zhonghong Jiang
    • 1
  1. 1.Shanghai Institute of Optics & Fine MechanicsChinese Academy of ScienceShanghaiChina
  2. 2.Graduate School of the Chinese Academy of SciencesShanghaiChina

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