Composition dependence of the ultraviolet absorption edge in lithium niobate

L. Kovács, G. Ruschhaupt, K. Polgár, G. Corradi, M. Wöhlecke

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A convenient and fast method to determine the composition of LiNbO3 single crystals consisting of a measurement of the position of the fundamental absorption edge in the near UV region is refined and extended to the stoichiometric range. Using unsophisticated apparatus and simple reflection correction, the proposed two-parameter calibration equation provides an absolute accuracy of 0.1 mol% with the relative accuracy reaching an unusual value of better than 0.01 mol% for near stoichiometric compositions.

Original languageEnglish
Pages (from-to)2801-2803
Number of pages3
JournalApplied Physics Letters
Issue number21
Publication statusPublished - May 26 1997


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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