Broadband generation of acoustic surface waves on GaAs by conversion from acoustoelectrically amplified bulk waves
- 15 April 1977
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 30 (8) , 361-363
- https://doi.org/10.1063/1.89429
Abstract
This paper describes the first observation of the generation of surface waves in a broad frequency band (0.2<f<1.0 GHz) by conversion from bulk acoustic waves. The latter are obtained by acoustoelectric amplification from thermal background in GaAs samples at 300 K. The surface waves are generated in the form of narrow propagating domains. Both group and phase velocity measurements, carried out on the principal crystallographic surfaces, served to identify the surface waves.Keywords
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