Acoustic Pulse Echoes Probed with Time-Resolved X-Ray Triple-Crystal Diffractometry

Yujiro Hayashi, Yoshihito Tanaka, Tomoyuki Kirimura, Noboru Tsukuda, Eiichi Kuramoto, and Tetsuya Ishikawa
Phys. Rev. Lett. 96, 115505 – Published 23 March 2006

Abstract

Acoustic pulse echoes generated by femtosecond laser irradiation were detected using time-resolved x-ray triple-crystal diffractometry. The determined time-dependent longitudinal strain component for pulse echoes in silicon and gallium arsenide plates showed that the polarity of the strain pulse was dependent on the optically induced initial stress, and that the bipolar pulse waveform was gradually deformed and broadened in the course of propagation. The three-dimensional wave front distortion of pulse echoes was shown simply as the pulse duration broadening, which was consistent with a boundary roughness for an unpolished plate.

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  • Received 5 November 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.115505

©2006 American Physical Society

Authors & Affiliations

Yujiro Hayashi1,2, Yoshihito Tanaka2,3, Tomoyuki Kirimura2, Noboru Tsukuda4, Eiichi Kuramoto4, and Tetsuya Ishikawa2

  • 1Interdisciplinary Graduate School of Engineering Sciences, Kyushu Univ., Kasuga, Fukuoka 816-8580, Japan
  • 2RIKEN SPring-8 Center, Sayo-cho Sayo-gun, Hyogo 679-5148, Japan
  • 3CREST, JST, Japan
  • 4Research Institute for Applied Mechanics, Kyushu Univ., Kasuga, Fukuoka 816-8580, Japan

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Issue

Vol. 96, Iss. 11 — 24 March 2006

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