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Spectrochim Acta A Mol Biomol Spectrosc. 2015 Jan 5;134:608-13. doi: 10.1016/j.saa.2014.06.070. Epub 2014 Jun 30.

Structural and optical study on antimony-silicate glasses doped with thulium ions.

Author information

  • 1Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland. Electronic address: d.dorosz@pb.edu.pl.
  • 2Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland.
  • 3Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland.

Abstract

Structural, spectroscopic and thermal properties of SiO₂-Al₂O₃-Sb₂O₃-Na₂O glass system doped with 0.2 mol% Tm₂O₃ have been presented. Synthesis of antimony-silicate glasses with relatively low phonon energy (600 cm(-1), which implicates a small non-radiative decay rate) was performed by conventional high-temperature melt-quenching methods. The effect of SiO₂/Sb₂O₃ ratio in fabricated Tm(3+) doped glass on thermal, structural and luminescence properties was investigated. On the basis of structural investigations decomposition of absorption bands in the infrared FTIR region was performed, thus determining that antimony ions are the only glass-forming ions, setting up the lattice of fabricated glasses. Luminescence band at the wavelength of 1.8 μm corresponding to (3)F₄→(3)H₆ transition in thulium ions was obtained under 795 nm laser pumping. It was observed that combination of relatively low phonon energy and greater separation of optically active centers in the fabricated glasses influenced in decreasing the luminescence intensity at 1800 nm.

Copyright © 2014 Elsevier B.V. All rights reserved.

KEYWORDS:

Antimony-silicate glass; FT-IR properties; NIR emission; Optical properties; Structural study; Tm(3+) ions

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