Abstract
Gigahertz surface acoustic waves have been optically generated and detected on aluminum metallic films and silicon wafers using the laser-induced grating technique. The acoustic velocities were in good agreement with those of Rayleigh waves. Photothermal surface gratings could also be detected as a nonpropagating component of the thermoelastic waves. The relaxation time of the grating was related to the thermal diffusivity of the material. A simplified theory for the generation of surface transient gratings containing acoustic waves is presented in addition to the experimental results.
| Original language | English |
|---|---|
| Pages (from-to) | 132-134 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 57 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Dec 1 1990 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
Laser-induced surface acoustic waves and photothermal surface gratings generated by crossing two pulsed laser beams. / Harata, Akira; Nishimura, Hiroyuki; Sawada, Tsuguo.
In: Applied Physics Letters, Vol. 57, No. 2, 01.12.1990, p. 132-134.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Laser-induced surface acoustic waves and photothermal surface gratings generated by crossing two pulsed laser beams
AU - Harata, Akira
AU - Nishimura, Hiroyuki
AU - Sawada, Tsuguo
PY - 1990/12/1
Y1 - 1990/12/1
N2 - Gigahertz surface acoustic waves have been optically generated and detected on aluminum metallic films and silicon wafers using the laser-induced grating technique. The acoustic velocities were in good agreement with those of Rayleigh waves. Photothermal surface gratings could also be detected as a nonpropagating component of the thermoelastic waves. The relaxation time of the grating was related to the thermal diffusivity of the material. A simplified theory for the generation of surface transient gratings containing acoustic waves is presented in addition to the experimental results.
AB - Gigahertz surface acoustic waves have been optically generated and detected on aluminum metallic films and silicon wafers using the laser-induced grating technique. The acoustic velocities were in good agreement with those of Rayleigh waves. Photothermal surface gratings could also be detected as a nonpropagating component of the thermoelastic waves. The relaxation time of the grating was related to the thermal diffusivity of the material. A simplified theory for the generation of surface transient gratings containing acoustic waves is presented in addition to the experimental results.
UR - http://www.scopus.com/inward/record.url?scp=0000147322&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000147322&partnerID=8YFLogxK
U2 - 10.1063/1.103964
DO - 10.1063/1.103964
M3 - Article
AN - SCOPUS:0000147322
VL - 57
SP - 132
EP - 134
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 2
ER -