Optical probing of surface acoustic wave generation under interdigital transducers
- 15 May 1973
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 22 (10) , 480-481
- https://doi.org/10.1063/1.1654476
Abstract
High‐resolution optical spectroscopy was used to study the growth of continuously excited surface acoustic waves under 15‐ and 25‐finger‐pair aluminum interdigital transducers on y‐cut z‐propagating lithium niobate. The observed exponential growth of the surface wave with distance is in agreement with simple coupled‐mode theory. The coupling parameter leads to a direct evaluation of the effective electromechanical coupling constant K. For yz LiNbO3 a value of K2=0.030±0.003 was found.Keywords
This publication has 4 references indexed in Scilit:
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- Excitation and Detection of Volume Elastic Modes with Surface Conducting GratingsJournal of Applied Physics, 1972
- Analysis of Interdigital Surface Wave Transducers by Use of an Equivalent Circuit ModelIEEE Transactions on Microwave Theory and Techniques, 1969
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