Selective excitation of single-mode acoustic waves by phase velocity scanning of a laser beam

Kazushi Yamanaka, Yoshihiko Nagata, Toshio Koda

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

A novel method for selective generation of single-mode acoustic waves in multimode media has been developed using a laser beam scanned at the phase velocity of a specified mode. In dispersive media, the acoustic frequency can be varied by changing the scanning velocity. The number of carriers in the generated wave packet is proportional to the difference between the phase and the group velocities. These features were experimentally verified in the fundamental symmetric and asymmetric Lamb waves on an aluminum plate generated by a long-pulse Nd:YAG laser. Applications to anisotropy and thickness measurements are discussed.

Original languageEnglish
Pages (from-to)1591-1593
Number of pages3
JournalApplied Physics Letters
Volume58
Issue number15
DOIs
Publication statusPublished - 1991 Dec 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Selective excitation of single-mode acoustic waves by phase velocity scanning of a laser beam'. Together they form a unique fingerprint.

Cite this