Journal of Fluorescence

, Volume 20, Issue 3, pp 745–751 | Cite as

Spectroscopic Properties and Energy Transfer Analysis of Tm3+-Doped BaF2-Ga2O3-GeO2-La2O3 Glass

  • Shenglei Yu
  • Zhongmin Yang
  • Shanhui Xu
Original Paper


This paper reports on the spectroscopic properties and energy transfer analysis of Tm3+-doped BaF2-Ga2O3-GeO2-La2O3 glasses with different Tm2O3 doping concentrations (0.2, 0.5, 2.0, 2.5, 3.0, 3.5, 3.5, 4.0 wt%). Mid-IR fluorescence intensities in the range of 1,300 nm−2,200 nm have been measured when excited under an 808 nm LD for all the samples with the same pump power. Energy level structure and Judd-Ofelt parameters have been calculated based on the absorption spectra of Tm3+, cross-relaxation rates and multi-phonon relaxation rates have been estimated with different Tm2O3 doping concentrations. The maximum fluorescence intensity at around 1.8 μm has been obtained in Tm2O3-3 wt% sample and the maximum value of calculated stimulated emission cross-section of Tm3+ in this sample is about 0.48 × 10−20 cm2 at 1,793 nm, and there is not any crystallization peak in the DSC curve of this sample, which indicate the potential utility of Tm3+-doped BaF2-Ga2O3-GeO2- La2O3 glass for 2.0-μm optical fiber laser.


Tm3+-doped BaF2-Ga2O3-GeO2-La2O3 glass Spectroscopic properties Energy transfer process Judd-Ofelt theory Stimulated emission cross-section 



This work is supported by the DSTG (2006Z2-D0161), DSTG (2006 J1-C0491) and NSFC (50602017).


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Institute of Optical Communication Materials, Key Laboratory of Special Functional Materials of Ministry of EducationSouth China University of TechnologyGuangzhouPeople’s Republic of China

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