Experimental evidence of S1 mode quasi-resonance in thin plates using a laser based acoustic microscope

Claire Prada*, Oluwaseyi Balogun, Todd W. Murray

*Corresponding author for this work

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

5 Scopus citations


An amplitude modulated continuous wave laser source is used to generate Lamb waves in thin plates. The source is a 1550nm electro-absorption modulated laser. The acoustic waves are detected with a Michelson interferometer operating at 532nm. This system provides narrow-bandwidth detection at frequencies up to 200 MHz with extremely high sensitivity. The dispersion curves of up to five Lamb modes were constructed for 50μm tungsten plate, and we demonstrate that the laser source couples very efficiently into the quasi-resonance at the S1 minimum frequency.

Original languageEnglish (US)
Title of host publication2005 IEEE Ultrasonics Symposium
Number of pages4
StatePublished - Dec 1 2005
Event2005 IEEE Ultrasonics Symposium - Rotterdam, Netherlands
Duration: Sep 18 2005Sep 21 2005

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117


Other2005 IEEE Ultrasonics Symposium


  • Lamb wave
  • Laser based ultrasonics
  • Resonance

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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