Optical absorption and luminescence of Ho3+ ions in Bi2TeO5 single crystal

I. Földvári, A. Baraldi, R. Capelletti, N. Magnani, R. Sosa F, A. Munoz F, L. A. Kappers, A. Watterich

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25 Citations (Scopus)

Abstract

Bi2TeO5:Ho single crystals were grown by the Czochralski technique. Optical absorption spectra of Ho3+ have been monitored in the 4500-25,000 cm-1 spectral and 9-300 K temperature range by high resolution Fourier Transform Spectroscopy. Luminescence excitation and emission spectra were measured at room temperature in the visible range. The intra-configurational f-f transitions of Ho3+ were identified. The experimental absorption data were analyzed by a single-ion model, and the crystal field parameters for a C2-symmetry site were determined. On the basis of these calculations and analogy with the case of Er-doped Bi2TeO5, it can be inferred that Ho-Bi substitution mostly takes place at the Bi(1) sites. The Judd-Ofelt analysis was performed by fitting the polarized absorption spectra. The calculated Judd-Ofelt parameters were used to evaluate the Ho3+ radiative transition probabilities and the branching ratios. The results are discussed in view of potential applications of Bi2TeO5:Ho3+ as a laser material.

Original languageEnglish
Pages (from-to)688-696
Number of pages9
JournalOptical Materials
Volume29
Issue number6
DOIs
Publication statusPublished - Feb 2007

Keywords

  • Bismuth tellurite
  • Ho
  • Judd-Ofelt analysis
  • Laser material

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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    Földvári, I., Baraldi, A., Capelletti, R., Magnani, N., Sosa F, R., Munoz F, A., Kappers, L. A., & Watterich, A. (2007). Optical absorption and luminescence of Ho3+ ions in Bi2TeO5 single crystal. Optical Materials, 29(6), 688-696. https://doi.org/10.1016/j.optmat.2005.11.018