Noncontacting optical generation of focused surfaceacousticwaves using a customised zoneplate

M. Liu, H. P. Ho, Michael Geoffrey Somekh, J. M.R. Weaver

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

The use of computer generated holographic zoneplates to enhance the generation of laser ultrasound is described. An amplitude grating capable of focusing laser light onto an arc which in turn generates a near diffraction limited focus of 82MHz Rayleigh surface waves is also described. The application of zoneplates for ultrasonic nondestructive evaluation and imaging is considered.
Original languageEnglish
Pages (from-to)264-265
Number of pages2
JournalElectronics Letters
Volume31
Issue number4
DOIs
Publication statusPublished - 16 Feb 1995
Externally publishedYes

Keywords

  • Computer-generated holograph
  • Holograph optical elements
  • Surface acoustic wave devices

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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