Conoscopic interferometry of wafers for surface-acoustic wave devices

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

doi:10.1063/1.365755

Conoscopic interferometry of wafers for surface-acoustic wave devices

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

Research output: Contribution to journal › Article › Scientific › peer-review

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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 language	English
Pages (from-to)	4039-4042
Number of pages	4
Journal	Journal of Applied Physics
Volume	82
Issue number	8
DOIs	https://doi.org/10.1063/1.365755
Publication status	Published - 1997
MoE publication type	A1 Journal article-refereed

Keywords

birefringent materials
conoscopic interference
lithiumniobate
optical anisotropy

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10.1063/1.365755

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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.",

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year = "1997",

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T1 - Conoscopic interferometry of wafers for surface-acoustic wave devices

AU - Äyräs, P.

AU - Friberg, A.

AU - Kaivola, M.

AU - Salomaa, M.

PY - 1997

Y1 - 1997

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AB - 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.

KW - birefringent materials

KW - conoscopic interference

KW - lithiumniobate

KW - optical anisotropy

KW - birefringent materials

KW - conoscopic interference

KW - lithiumniobate

KW - optical anisotropy

KW - birefringent materials

KW - conoscopic interference

KW - lithiumniobate

KW - optical anisotropy

U2 - 10.1063/1.365755

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SN - 0021-8979

IS - 8

ER -