Laser Interferometric Technique for Measuring Small-Order Vibration Displacements

Harry A. Deferrari, Frank A. Andrews

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


A Michelson interferometer using a CW laser-light source has been used to measure the amplitude of small-order vibrational displacements. Measurements over the surface of a vibrating plate at points 1/2 mm in diameter are reported. Magnitudes of 0.1-5000 A at frequencies of 100 Hz-20 kHz have been measured with higher and lower limits possible. The advantages of the technique are discussed.

Original languageEnglish (US)
Pages (from-to)979-980
Number of pages2
JournalJournal of the Acoustical Society of America
Issue number5A
StatePublished - May 1966

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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