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Issue J. Phys. IV France
Volume 04, Number C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
Page(s) C7-689 - C7-692
DOI http://dx.doi.org/10.1051/jp4:19947161

8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique

J. Phys. IV France 04 (1994) C7-689-C7-692
DOI: 10.1051/jp4:19947161

Numerical and experimental studies of the generation of ultrasound by laser

M. Dubois1, F. Enguehard1, L. Bertrand1, M. Choquet2 and J.-P. Monchalin2

1  Ecole Polytechnique de Montréal, Département de Génie Physique, C.P. 6079, Succ. Centre-Ville, Montréal, Québec, Canada, H3C 3A7
2  Institut des Matériaux Industriels, Conseil National de Recherches du Canada, 75 boul. Mortagne, Boucherville, Québec, Canada, J4B 6Y4


Abstract
We present an analytical 1-D model of the laser generation of ultrasound that takes the optical penetration effect and the time profile of the laser pulse into account. This model leads to simple expressions for the time position and width of the precursor. The results of this model are compared to experimental data. We also present numerical and experimental directivity patterns of samples having various optical penetration depths.



© EDP Sciences 1994


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