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Journal of Inorganic Materials

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2010 , Vol. 25 >Issue 4: 429 - 434

DOI: https://doi.org/10.3724/SP.J.1077.2010.00429

Research Paper

Effects of WO3 Contents on the Thermal and Spectroscopic Properties of Tm3+-doped TeO2-WO3-La2O3Glasses

  • LI Ke-Feng ,
  • WANG Guo-Nian ,
  • HU Li-Li ,
  • ZHANG Jun-Jie ,
  • HU Jun-Jiang
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  • 1. Key Laboratory of Materials for High Power Laser,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Received date: 2009-07-02

  Revised date: 2009-11-04

  Online published: 2010-04-27

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Abstract

Tungstenlanthanumtellurite (TWL) glasses with the molar composition (90-x)TeO2-xWO3-9La2O3-1Tm2O3(x=10, 20, 30(mol%)) were prepared. Effects of WO3 contents on the thermal stability and spectroscopic properties of Tm3+ doped TWL glasses were studied. It is found that the thermal stability of TWL glasses is improved with the increasing WO3 contents. For the glass with 30mol% WO3, the glass transition temperature(Tg) is 457℃, while onset crystallization temperature(Tx) is not observed in DTA curve, and the thermal expansion coefficient of the glass decreases to 1.224×10-5/℃ (30-300℃). The maximum phonon energy of the glasses shows the dependence on the host composition. The spectroscopic intensity parameters (Ωt t=2,4,6), radiative transition rates, radiative lifetimes, and branching ratios are calculated by Judd-Ofelt theory. The emission crosssection of Tm3+: 3F4→3H6 transition is calculated by McCumber theory. The maximum emission crosssection of Tm3+ in 60TeO2-30WO3-9La2O3-1Tm2O3 glass is 9.6×10-21cm2. Evaluated from the thermal and spectroscopic properties, 60TeO2-30WO3-10La2O3 glass is a promising host material for ~2.0μm laser.

Key words： tungsten-lanthanum-tellurite glass; Tm3+; thermal stability; spectroscopic properties

Cite this article

LI Ke-Feng , WANG Guo-Nian , HU Li-Li , ZHANG Jun-Jie , HU Jun-Jiang . Effects of WO3 Contents on the Thermal and Spectroscopic Properties of Tm3+-doped TeO2-WO3-La2O3Glasses
[J]. Journal of Inorganic Materials, 2010 , 25(4) : 429 -434 . DOI: 10.3724/SP.J.1077.2010.00429

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