SAW propagation on proton-exchanged lithiumniobate

Erwin M. Biebl, Peter H. Russer, Kimon Anemogiannis

Research output: Contribution to journalConference articlepeer-review

23 Scopus citations


A novel method using only the easily measured velocity of SAWs (surface acoustic waves) is demonstrated for determination of elastic constants of anisotropic layers on arbitrarily anisotropic and piezoelectric substrates. The elastic constants and propagation properties of any nonpiezoelectric isotropic, cubic, or even (with slightly reduced accuracy) trigonal layer on an arbitrarily anisotropic substrate can be determined with this method. The method was applied to proton-exchanged (PE) lithium niobate in order to determine its as yet unknown elastic constants. Dispersion curves and elastic stiffness constants of PE Y-cut LiNbO3 have been evaluated. The results are reliable for waveguides fabricated in diluted melts containing 0.25-2.00 mol% lithium benzoate. Using the obtained elastic-stiffness constants, SAW propagation properties such as power flow, diffraction, and strain distribution can be analyzed in order to achieve sophisticated design of guided SAW and acoustooptic devices based on PE:LiNbO3 waveguides.

Original languageEnglish
Pages (from-to)281-284
Number of pages4
JournalUltrasonics Symposium Proceedings
StatePublished - 1989
EventIEEE 1989 Ultrasonics Symposium - Montreal, Que, Can
Duration: 3 Oct 19896 Oct 1989


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