Hydroxyl ions in stoichiometric LiNbO3 crystals doped with optical damage resistant ions

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Abstract

The infrared spectra of stoichiometric LiNbO3 crystals containing photorefractive damage resistant ions (e.g. M = Mg, Zn, Sc, In, Hf, Zr or Sn) above their threshold concentration reveal OH- absorption bands absent in undoped crystals. The bands are attributed to stretching vibrations of hydroxyl ions in (Formula presented.)-OH- (n = 2, 3 or 4) type defect complexes. The higher the valency of the dopant ion the lower the observed frequency of the hydroxyl vibration in the complex, and the closer the O-H bond direction to the oxygen plane perpendicular to the crystallographic c axis of the crystal.

Original languageEnglish
Pages (from-to)55-58
Number of pages4
JournalOptical Materials
Volume37
Issue numberC
DOIs
Publication statusPublished - Jan 1 2014

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Keywords

  • Hydroxyl ion
  • Infrared spectra
  • Lithium niobate
  • Photorefractive damage resistance

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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