Laser-generated MHz elastic waves from metallic-liquid interfaces
- 15 May 1979
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 34 (10) , 617-619
- https://doi.org/10.1063/1.90637
Abstract
The thermoelastic generation of MHz waves from a three‐layer structure consisting of a transparent substrate with an evaporated metallic film in contact with a liquid is described. Results with laser excitation indicate the magnitude of the strain wave to be strongly dependent on the expansion coefficient of the liquid and thickness of the metal film. The data are compared to a three‐medium one‐dimensional theory. Some practical applications such as nondestructive evaluation are discussed using this structure.Keywords
This publication has 5 references indexed in Scilit:
- Photoacoustics on a microscopic scaleApplied Physics Letters, 1978
- 20-MHz acoustic waves from pulsed thermoelastic expansions of constrained surfacesApplied Physics Letters, 1977
- Photoacoustic spectroscopy of solidsOptics Communications, 1973
- Conversion of Electromagnetic to Acoustic Energy by Surface HeatingThe Journal of the Acoustical Society of America, 1966
- Generation of Elastic Waves by Transient Surface HeatingJournal of Applied Physics, 1963