Planar acoustic microscope lens using Rayleigh to compressional conversion
- 3 July 1980
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 16 (14) , 541-543
- https://doi.org/10.1049/el:19800377
Abstract
A planar acoustic lens is described in which Rayleigh waves generated by a circular interdigital transducer on LiNbO3 are converted to a focused hollow conical beam in the contiguous liquid. The focal spot is comparable to that of a standard diffraction-limited lens of similar aperture; the calculated sidelobes are higher but the measured ones are comparable.Keywords
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