Optical Measurement of Surface-Wave Scatter Losses in Piezoelectric Ceramics
- 15 March 1972
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 20 (6) , 210-212
- https://doi.org/10.1063/1.1654114
Abstract
Direct experimental measurement of surface-wave scatter losses of several ceramics is reported, as well as verification of the fourth-power frequency dependence of scatter losses per wavelength predicted by Steg and Klemens. Laser measurements of surface-wave amplitude vs position exhibit interference due to scattered waves. The statistical analysis of such measurements allows separation of scatter losses from true dissipative losses. Scatter losses for Honeywell Type S material are found to be 0.027 dB/wavelength at 46.8 MHz, and increase with the fourth power of frequency. A limiting frequency for a given ceramic for surface-wave applications might be the frequency at which scatter losses overtake dissipative losses; for Honeywell S, this occurs at 73 MHz.Keywords
This publication has 2 references indexed in Scilit:
- Scattering of Rayleigh Waves by Surface IrregularitiesPhysical Review Letters, 1970
- Probing of Acoustic Surface Perturbations by Coherent LightApplied Optics, 1969