Growth and characterization of Yb3+-doped (Lu,Y)AlO3 fiber single crystals grown by the micro-pulling-down method

Jang Bo Shim, Akira Yoshikawa, Martin Nikl, Jan Pejchal, Dae Ho Yoon, Minoru Isshiki, Tsuguo Fukuda

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Yb3+-doped (Lu,Y)AlO3 single crystals have been grown by the micro-pulling-down method with a radio-frequency heating system. Starting melt compositions of LuxY0.9-xYb0.1 AlO3 were varied with x = 0.1, 0.2, 0.35, and 0.4. The best Yb 3+-doped (Lu,Y)AlO3 single crystals were obtained applying a pulling rate of 0.12 mm/min. To investigate the compositional homogeneity, the effective segregation coefficient of Lu and Yb ions was estimated k eff = 1.02 and 1.05 for Lu0.2Y0.7Yb 0.1AlO3 crystal, respectively. Absorption, radio-luminescence and luminescence decay kinetic of Yb3+-doped (Lu,Y)AlO3 was investigated for room temperature conditions and found to be similar to that of Yb3+-doped YAlO3. Very fast charge transfer luminescence of Yb3+ in the near ultraviolet to visible spectral range and the high density of the LuAlO3 make this material a promising candidate for fast scintillators.

Original languageEnglish
Pages (from-to)7661-7664
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume43
Issue number11 A
DOIs
Publication statusPublished - 2004 Nov 1

Keywords

  • Charge transfer luminescence
  • Lutetium orthoaluminate
  • Micro-pulling-down method
  • Perovskite
  • Yb doping

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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