Determination of the crystal composition from the OH- vibrational spectrum in lithium niobate

G. Dravecz, L. Kovács

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A simple and accurate spectroscopic method is proposed to determine the composition of LiNbO3 crystals close to the stoichiometric composition. The method is based on the evaluation of the vibrational spectrum of hydroxyl ions that are always present in air-grown crystals. The intensity ratio R=I3480/I3465 of two band components peaking at about 3480 and 3465 cm-1 changes linearly with Li2O content in the 49.7-50.0 mol∈% range. Thermal effects influencing the redistribution of hydroxyl ions among the different lattice sites have also been taken into account. On comparing the results with the calibration based on ultraviolet absorption edge measurements, an absolute accuracy of at about 0.02 mol∈% was obtained.

Original languageEnglish
Pages (from-to)305-307
Number of pages3
JournalApplied Physics B: Lasers and Optics
Volume88
Issue number2
DOIs
Publication statusPublished - Jul 2007

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lithium niobates
vibrational spectra
ultraviolet absorption
crystals
temperature effects
ions
evaluation
air

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Determination of the crystal composition from the OH- vibrational spectrum in lithium niobate. / Dravecz, G.; Kovács, L.

In: Applied Physics B: Lasers and Optics, Vol. 88, No. 2, 07.2007, p. 305-307.

Research output: Contribution to journalArticle

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