Influence of different dehydration gases on physical and optical properties of tellurite and tellurium–tungstate glasses

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• 作者：Keren Li ; Liaolin Zhang ; Ye Yuan ; Wei Wei
• 刊名：Applied Physics B: Lasers and Optics
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：122
• 期：4
• 全文大小：919 KB
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• 作者单位：Keren Li (1)
  Liaolin Zhang (1)
  Ye Yuan (1)
  Wei Wei (1)
  
  1. School of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Electromagnetism, Optics and Lasers
  Physical Chemistry
  Laser Technology and Physics and Photonics
  Quantum Optics, Quantum Electronics and Nonlinear Optics
  Optical Spectroscopy and Ultrafast Optics
  Physics and Applied Physics in Engineering
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0649

文摘

Two kinds of Er3+-doped tellurite glasses with the compositions (in mol%) of 60TeO₂–30WO₃–10La₂O₃–1Er₂O₃ and 60TeO₂–30ZnO–10Bi₂O₃–1Er₂O₃ were prepared. Using different dehydration gases, we found that blowing a gas mixture of dry oxygen and CCl₄ ensures most efficient glass melt dehydration. The free and hydrogen-bonded OH groups can be well excluded from the tellurite and tellurium–tungstate glasses, and the absorption coefficient of free OH groups in dehydrated glasses was equal to 0.68 and 1.25 cm−1, respectively. The strong 1.5- and 2.7-µm emissions were observed from the glasses, which increased with the decrease in OH content.