Rare earth doping into optical nonlinear nanocrystalline phase in transparent TeO2-based glass-ceramics

K. Hirano, Y. Benino, T. Komatsu

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Optically transparent rare earth (Ln)-doped glass-ceramics based on the system K2O-Nb2O5-TeO2 have been prepared, and the effect of Ln additions on crystallization behaviors and optical properties has been examined. The lattice constant of the TeO2-based metastable optical nonlinear nanocrystalline phase (average particle size: <60nm) with basically a cubic structure in the glass-ceramics decreases due to Ln additions, and the incorporation of Ln3+ with small ionic radii such as Er3+ or Tm3+ stabilizes the metastable crystalline phase, giving the significant effect on the crystallization and phase transformation behaviors in TeO2-based glasses. From the phonon sideband spectra associated with the 5D07F0 transition of Eu3+, it is found that both phonon energy and electron phonon coupling strength for transparent glass-ceramics are smaller than t hose in the precursor glass. The upconversion fluorescence intensity around 550 nm due to the 4S3/24I15/2 transition of Er3+ is strong (about 20 times) compared with the precursor glass.

Original languageEnglish
Pages (from-to)2075-2082
Number of pages8
JournalJournal of Physics and Chemistry of Solids
Volume62
Issue number11
DOIs
Publication statusPublished - Nov 2001
Externally publishedYes

Keywords

  • A. glasses
  • A. optical materials
  • C. X-ray diffraction
  • D. optical properties

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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