Light-induced properties of Ru-doped Bi12TiO20 crystals

V. Marinova*, Shiuan-Huei Lin, V. Sainov, M. Gospodinov, Ken-Yuh Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


Absorption, light-induced absorption, photoconductivity and dark conductivity measurements are performed on Bi12TiO20 (BTO) crystals doped with different concentrations of ruthenium. It is found that a higher ruthenium addition shifts the optical absorption to the near-IR spectral region in comparison with non-doped BTO crystals and the absorption changes increase with increasing Ru content. The dark conductivity follows the Arrhenius law with an activation energy of 0.89 eV. From the measured light-induced absorption and nonlinear photoconductivity the participation of a shallow level in the charge transport mechanism in Ru-doped BTO crystals is suggested. Highly Ru-doped BTO samples posses infrared sensitivity and holographic gratings are successfully recorded at 790 and 825 nm, respectively.

Original languageEnglish
JournalJournal of Optics A: Pure and Applied Optics
Issue number6
StatePublished - 1 Nov 2003


  • Doped BTO
  • Infrared sensitivity
  • Light-induced properties
  • Photorefractive crystals

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