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)
5 Downloads (Pure)

Abstract

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
Volume82
Issue number8
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

Keywords

  • birefringent materials
  • conoscopic interference
  • lithiumniobate
  • optical anisotropy

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