• DocumentCode
    758284
  • Title

    Noncontacting optical generation of focused surface acoustic waves using a customised zoneplate

  • Author

    Liu, M. ; Ho, H.P. ; Somekh, M.G. ; Weaver, J.M.R.

  • Author_Institution
    Dept. of Electr. & Electron. Eng., Nottingham Univ., UK
  • Volume
    31
  • Issue
    4
  • fYear
    1995
  • fDate
    2/16/1995 12:00:00 AM
  • Firstpage
    264
  • Lastpage
    265
  • 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 82 MHz Rayleigh surface waves is also described. The application of zoneplates for ultrasonic nondestructive evaluation and imaging is considered
  • Keywords
    Rayleigh waves; acoustic wave production; laser beam applications; surface acoustic wave devices; ultrasonic focusing; ultrasonic imaging; ultrasonic materials testing; zone plates; 82 MHz; Rayleigh surface waves; US imaging; amplitude grating; computer generated holographic zoneplates; customised zoneplate; focused surface acoustic waves; laser ultrasound generation; near diffraction limited focus; noncontacting optical generation; ultrasonic nondestructive evaluation;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19950216
  • Filename
    375808