Selective excitation of bulk and surface acoustic waves by rapid scanning of a laser interference fringe

Kazushi Yamanaka, Hideo Nishino, Yusuke Tsukahara, Yoshihiko Nagata, Toshio Koda

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

We propose a new and effective method for selective excitation of surface acoustic waves (SAW) and bulk acoustic waves (BAW) with frequencies higher than 100 MHz using rapidly scanning interference fringes (SIF). The SIF is produced by intersecting two laser beams with a frequency difference. It works as a thermoelastic source for generating BAW and SAW. The propagating direction is given by φ = sin-1(ν/νf), where ν is the BAW velocity and νf is the SIF scanning velocity. When the scanning velocity νf is equal to the SAW velocity, SAW is excited instead of BAW. Since νf is determined by the incident angle of the laser beams onto the surface of a tested object, selective excitation of directional BAW and SAW is achieved.

本文言語English
ホスト出版物のタイトルProceedings of the Ultrasonics International Conference
出版社Publ by Butterworth-Heinemann Ltd
ページ807-810
ページ数4
ISBN(印刷版)0750618779, 9780750618779
DOI
出版ステータスPublished - 1993
外部発表はい
イベントProceedings of the Ultrasonics International Conference - Vienna, Austria
継続期間: 1993 7月 61993 7月 8

出版物シリーズ

名前Proceedings of the Ultrasonics International Conference

Other

OtherProceedings of the Ultrasonics International Conference
CityVienna, Austria
Period93/7/693/7/8

ASJC Scopus subject areas

  • 工学(全般)

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