Characterization of emission properties of Er3+ ions in TeO2-CdF2-WO3 glasses


Bilir G. , MUSTAFAOGLU N., OZEN G., DiBartolo B.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, cilt.83, ss.314-321, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 83 Konu: 1
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.saa.2011.08.037
  • Dergi Adı: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Sayfa Sayıları: ss.314-321

Özet

TeO2-CdF2-WO3 glasses with various compositions and Er3+ concentrations were prepared by conventional melting method. Their optical properties were studied by measuring the absorption, luminescence spectra and the decay patterns at room temperature. From the optical absorption spectra the Judd-Ofelt parameters (Omega(r)), transition probabilities, branching ratios of various transitions, and radiative lifetimes were calculated. The absorption and emission cross-section spectra of the I-4(15/2) to I-4(13/2) transition of erbium were determined. Emission quantum efficiencies and the average critical distance R-0 which provides a measure for the strength of cross relaxation were determined. (C) 2011 Elsevier B.V. All rights reserved.