Generation and detection of shear acoustic waves in metal submicrometric films with ultrashort laser pulses

被引：86
作者：
Rossignol, C
Rampnoux, JM
Perton, M
Audoin, B
Dilhaire, S
机构：
[1] Univ Bordeaux 1, CNRS, UMR 5469, Mecan Phys Lab, F-33405 Talence, France
[2] Univ Bordeaux 1, CNRS, UMR 5798, Ctr Phys Mol Opt & Hertzienne, F-33405 Talence, France
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 16期
关键词：
D O I：
10.1103/PhysRevLett.94.166106
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present experimental and calculational results demonstrating the thermoelastic generation of shear acoustic waves using femtosecond laser pulses in submicrometric isotropic aluminum films. We show that the generation of the shear waves is correlated to the reduction of the width of the optoacoustic source on the surface. The presence of shear waves is related to acoustic diffraction and acoustic mode conversion at the thin film interfaces.
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页数：4
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