High resolution photoacoustic microscopy on a surface acoustic wave device
- 1 December 1982
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 41 (11) , 1045-1046
- https://doi.org/10.1063/1.93387
Abstract
Photoacoustic imaging of microscopic metal film test structures on a surface acoustic wave device at 76-MHz light modulation frequency is reported. The samples are evaporated on a YZ LiNbO3 crystal surface and are scanned through the focus spot of a mode-locked dye laser beam. The optically generated surface acoustic waves are detected by means of a resonant interdigital transducer. Synchronization of the focus spot position to the corresponding piezoelectric signal yields a high resolution photoacoustic image of the samples (lateral resolution 5 μm).Keywords
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