Refraction, beam splitting and dispersion of GHz surface acoustic waves by a phononic crystal

Refraction, beam splitting and dispersion of GHz surface acoustic waves by a phononic crystal

We exploit a time-resolved ultrafast optical technique to study the propagation of point-excited surface acoustic waves on a microscopic two-dimensional phononic crystal in the form of a square lattice of holes in a silicon substrate. Constant-frequency images and the dispersion relation are extract...

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Bibliographic Details
Main Authors: Osamu Matsuda, Hiroaki Koga, Hiroki Nishita, Motonobu Tomoda, Paul H. Otsuka, Oliver B. Wright
Format: Article
Language:English
Published: Elsevier 2023-04-01
Series:Photoacoustics
Subjects:
Picosecond laser ultrasonics
Surface acoustic waves
Time-resolved imaging
Acoustic field
Dispersion relation
Phononic crystal
Online Access:http://www.sciencedirect.com/science/article/pii/S2213597923000241

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http://www.sciencedirect.com/science/article/pii/S2213597923000241

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