Abstract
Development of new kinds of surface acoustic wave transducers is an important task because of numerous possible applications.New kind of transducer is used to generate Rayleigh waves. The acoustic field generated by the transducer is tested using Scanning Laser Acoustic Microscopy (SLAM). Images of the acoustic fields on fused quartz and Y, X-SiO2 single crystal are detected by the scanned laser beam on the free surface in real time. The relative magnitudes of the radiated waves at different distances along the surface are measured to estimate the efficiencies of the transduction. The fields with and without acoustic absorber along the perimeter of the substrate surface are measured and compared with one another to estimate the contribution of reflected waves. The obtained results demonstrate new abilities of SLAM technique in non destructive testing. Possible applications of new transducers are discussed.
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