Conoscopic interferometry of wafers for surface-acoustic wave devices

P. Äyräs, A. Friberg, M. Kaivola, M. Salomaa

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
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We show that in interpreting the conoscopic interference fringes, one should exercise care in employing approximate expressions which fail for certain crystal cuts. In this paper, we study 64°- and 128°-rotated Y-cut and Z-cut LiNbO3 wafers. We show that the error made in using the approximate formulae for the samples is more than 25% and that one has to use exact formulae in order to attain quantitative agreement with the experimental data.
Original languageEnglish
Pages (from-to)4039-4042
Number of pages4
JournalJournal of Applied Physics
Issue number8
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed


  • birefringent materials
  • conoscopic interference
  • lithiumniobate
  • optical anisotropy

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