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

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

研究论文

WO3含量对Tm3+掺杂TeO2-WO3-La2O3玻璃热学性能及光谱性质的影响

  • 李科峰 ,
  • 汪国年 ,
  • 胡丽丽 ,
  • 张军杰 ,
  • 胡俊江
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  • 1. 中国科学院 上海光学精密机械研究所, 中国科学院强激光材料重点实验室, 上海 201800; 2. 中国科
    学院 研究生院, 北京 100049

收稿日期: 2009-07-02

  修回日期: 2009-11-04

  网络出版日期: 2010-04-27

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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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摘要

研究了(90-x)TeO2-xWO3-9La2O3-1Tm2O3(x=10、20、30(mol%))玻璃（以下简称TWL玻璃）的热学性能和光谱性质. 研究发现WO3的增加可以提高TWL玻璃的热稳定性, 降低玻璃的热膨胀系数. WO3含量为30mol%时, 玻璃化转变温度Tg达457℃, DTA曲线上无析晶开始温度Tx, 且热膨胀系数降为1.224×10-5/℃(30～300℃). 玻璃的最大声子能量随WO3的增加而略微增大. 用J-O理论计算了Tm3+离子在TWL玻璃中的光谱参数和部分能级的自发辐射几率、荧光分支比、辐射寿命. 用McCumber理论计算了Tm3+离子3F4→3H6跃迁的受激发射截面, 在60TeO2-30WO3-9La2O3-1Tm2O3玻璃中, Tm3+离子的最大受激发射截面达到9.6×10-21cm2. 研究结果表明, 60TeO2-30WO3-10La2O3玻璃具有优良的热学性能和光谱性质, 是一种实现~2.0μm激光输出的理想玻璃基质材料.

关键词： 碲钨酸盐玻璃; Tm3+; 热稳定性; 光谱性质

本文引用格式

李科峰 , 汪国年 , 胡丽丽 , 张军杰 , 胡俊江 . WO3含量对Tm3+掺杂TeO2-WO3-La2O3玻璃热学性能及光谱性质的影响[J]. 无机材料学报, 2010 , 25(4) : 429 -434 . DOI: 10.3724/SP.J.1077.2010.00429

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

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