• DocumentCode
    973075
  • Title

    Filter detection of phase-modulated laser probe signals

  • Author

    Auld, B.A. ; Ayter, S. ; Tan, M. ; Hauden, D.

  • Author_Institution
    Stanford University, Edward L. Ginzton Laboratory, Stanford, USA
  • Volume
    17
  • Issue
    18
  • fYear
    1981
  • Firstpage
    661
  • Lastpage
    662
  • Abstract
    Two simple frequency filtering methods are described for demodulating laser probe measurements of acoustic vibration signals. Measurements are presented of Lamb wave scattering in a plate waveguidc and of acoustic second-harmonic generation in a length expander resonator. In the second example spurious second-harmonic signals are rejected by using a phase heterodyning technique.
  • Keywords
    measurement by laser beam; signal detection; vibration measurement; Lamb wave scattering; acoustic second-harmonic generation; acoustic vibration signals; demodulating laser probe measurements; frequency filtering methods; length expander resonator; phase heterodyning technique; plate waveguide;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19810462
  • Filename
    4245939
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=973075