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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of the Ultrasonics International Conference
PublisherPubl by Butterworth-Heinemann Ltd
Pages807-810
Number of pages4
ISBN (Print)0750618779, 9780750618779
DOIs
Publication statusPublished - 1993
Externally publishedYes
EventProceedings of the Ultrasonics International Conference - Vienna, Austria
Duration: 1993 Jul 61993 Jul 8

Publication series

NameProceedings of the Ultrasonics International Conference

Other

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

ASJC Scopus subject areas

  • Engineering(all)

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