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

Research output: Contribution to journalArticle

24 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

Fingerprint

Light absorption
Luminescence
Absorption spectra
optical absorption
Single crystals
Ions
luminescence
absorption spectra
laser materials
single crystals
Crystal symmetry
transition probabilities
crystal field theory
optical spectrum
Fourier transforms
ions
emission spectra
Substitution reactions
Spectroscopy
substitutes

Keywords

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Optical absorption and luminescence of Ho3+ ions in Bi2TeO5 single crystal. / Földvári, I.; Baraldi, A.; Capelletti, R.; Magnani, N.; Sosa F, R.; Munoz F, A.; Kappers, L. A.; Watterich, A.

In: Optical Materials, Vol. 29, No. 6, 02.2007, p. 688-696.

Research output: Contribution to journalArticle

Földvári, I, Baraldi, A, Capelletti, R, Magnani, N, Sosa F, R, Munoz F, A, Kappers, LA & Watterich, A 2007, 'Optical absorption and luminescence of Ho3+ ions in Bi2TeO5 single crystal', Optical Materials, vol. 29, no. 6, pp. 688-696. https://doi.org/10.1016/j.optmat.2005.11.018
Földvári, I. ; Baraldi, A. ; Capelletti, R. ; Magnani, N. ; Sosa F, R. ; Munoz F, A. ; Kappers, L. A. ; Watterich, A. / Optical absorption and luminescence of Ho3+ ions in Bi2TeO5 single crystal. In: Optical Materials. 2007 ; Vol. 29, No. 6. pp. 688-696.
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