Autor: |
Laude, Vincent, Gérard, Davy, Khelfaoui, Naima, Jerez-Hanckes, Carlos F., Benchabane, Sarah, Khelif, Abdelkrim |
Rok vydání: |
2007 |
Předmět: |
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Druh dokumentu: |
Working Paper |
DOI: |
10.1063/1.2891055 |
Popis: |
We propose and demonstrate experimentally the concept of the annular interdigital transducer that focuses acoustic waves on the surface of a piezoelectric material to a single, diffraction-limited, spot. The shape of the transducing fingers follows the wave surface. Experiments conducted on lithium niobate substrates evidence that the generated surface waves converge to the center of the transducer, producing a spot that shows a large concentration of acoustic energy. This concept is of practical significance to design new intense microacoustic sources, for instance for enhanced acouto-optical interactions. |
Databáze: |
arXiv |
Externí odkaz: |
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