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Watching Ripples on Crystals

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Title: Watching Ripples on Crystals
Authors: Sugawara, Y. Browse this author
Wright, O. B.2 Browse this author →KAKEN DB
Matsuda, O. Browse this author →KAKEN DB
Takigahira, M. Browse this author
Tanaka, Y. Browse this author →KAKEN DB
Tamura, S. Browse this author
Gusev2, V. E. Browse this author
Authors(alt): ライト, オリバー バーナード2
Issue Date: 18-Apr-2002
Publisher: American Physical Society
Volume: 88
Issue: 18
Start Page: 185504
Publisher DOI: 10.1103/PhysRevLett.88.185504
PMID: 12005696
Abstract: We present a new method for imaging surface phonon focusing and dispersion at frequencies up to 1 GHz that makes use of ultrafast optical excitation and detection. Animations of coherent surface phonon wave packets emanating from a point source on isotropic and anisotropic solids are obtained with micron lateral resolution. We resolve rounded-square shaped wave fronts on the (100) plane of LiF and discover isolated pockets of pseudosurface wave propagation with exceptionally high group velocity in the (001) plane of TeO2. Surface phonon refraction and concentration in a minute gold pyramid is also revealed.
Rights: Copyright © 2002 American Physical Society
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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