Journal of Inorganic Materials

• Research Paper • Previous Articles     Next Articles

Spectral Properties and Thermal Stability of Erbium-doped TeO2-WO3-La2O3 Glass

ZHU Lin, XU Tie-Feng, NIE Qiu-Hua, SHEN Xiang   

  1. Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211, China
  • Received:2005-04-07 Revised:2005-05-26 Published:2006-03-20 Online:2006-03-20

Abstract:

Er3+-codoped TeO2-WO3-La2O3 glasses were prepared. The thermal stability and spectral properties, such as absorption spectra, emission spectra of the glass samples were measured and investigated. Three intensity parameters, electric dipole transition, magnetic dipole transitions were calculated by Judd-Ofelt theory. The relationship of Ω2 and glass composition was analyzed. The emission cross-section of the 4I13/24I15/2 transition of Er3+ ions was calculated by McCumber theory. When La2O3 content was up to 5mol%, glass samples showed no onset crystallization temperature (Tx), indicating that they are saitable
for fiber drawing. The results show that TeO2-WO3-La2O3 glass has a good thermal stability and will be a promising host material for 1.5
μm broadband amplification.

Key words: tungsten-tellurite glass, Er3+, spectral properties, thermal stability

CLC Number: