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Optical generation of surface acoustic waves guided at the linear boundary between two thin films

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Title: Optical generation of surface acoustic waves guided at the linear boundary between two thin films
Authors: Maznev, A. A. Browse this author
Kelf, Timothy A. Browse this author
Tomoda, Motonobu Browse this author
Matsuda, Osamu Browse this author
Wright, Oliver B. Browse this author
Keywords: high-speed optical techniques
localised modes
surface acoustic waves
thin films
Issue Date: 1-Feb-2010
Publisher: American Institute of Physics
Journal Title: Journal of Applied Physics
Volume: 107
Issue: 3
Start Page: 033521
Publisher DOI: 10.1063/1.3298472
Abstract: Laser-induced transient grating measurements and ultrafast optical pump-probe imaging of surface acoustic waves near a linear boundary between copper and silica films on a silicon substrate indicate the presence of a boundary-localized mode with a phase velocity slightly below the Rayleigh wave velocity on the copper film. We analyze in detail the dispersion of this localized mode in comparison with that of the Rayleigh waves in the surrounding materials. The existence of the localized mode is ascribed to the nonuniformity of the copper film thickness near its edge resulting from polishing during fabrication.
Rights: Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 107, 033521 (2010) and may be found at
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: WRIGHT O. B.

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