Judd–Ofelt Analysis of Dy3+-Activated Aluminosilicate Glasses Prepared by Sol–Gel Method

  • Buonyavong Sengthong
  • Ho  Van Tuyen
  • Nguyen Thi Thai An
  • Phan  Van Do
  • Nguyen Thi Quy Hai
  • Pham Thi Minh Chau
  • Vu Xuan Quang
Article
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Abstract

Aluminosilicate (AS) glasses doped with different Dy3+ concentrations were synthesized via sol–gel method. Absorption, photoluminescence spectra and lifetime of this material have been studied. From analytical results of absorption spectra, the Judd–Ofelt (JO) parameters of prepared samples have been determined. These JO parameters combined with photoluminescence spectra have been used to evaluate transition probabilities (AR), branching ratios (β) and the calculated oscillator strengths of AS:Dy3+ glasses. The radiative branching ratio of 4F9/2 → 6H13/2 transition has a minimum value at 62.2% for βR which predicts that this transition in AS:Dy3+ glasses can give rise to lasing action. JO parameters show that the Ω2 increases with the increasing of Dy3+ ion concentration due to the increased polarizability of the average coordination medium and decreased average symmetry.

Keywords

Aluminosilicate glasses sol–gel method JO parameters Dy3+ 

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Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  • Buonyavong Sengthong
    • 2
  • Ho  Van Tuyen
    • 1
  • Nguyen Thi Thai An
    • 1
  • Phan  Van Do
    • 3
  • Nguyen Thi Quy Hai
    • 1
  • Pham Thi Minh Chau
    • 1
  • Vu Xuan Quang
    • 1
  1. 1.Duy Tan UniversityDa NangVietnam
  2. 2.Department of Physics, Faculty of Natural SciencesNational University of LaosVientianeLaos
  3. 3.Thuy Loi UniversityHanoiVietnam

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