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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 21 — Jul. 20, 2012
  • pp: 5318–5325

Self-mixing vibrometer with real-time digital signal elaboration

Alessandro Magnani, Alessandro Pesatori, and Michele Norgia  »View Author Affiliations

Applied Optics, Vol. 51, Issue 21, pp. 5318-5325 (2012)

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This work describes the development of an optical sensor for measurement of vibration without contact. The realized vibrometer is based on real-time digital elaboration of the signal obtained by a self-mixing interferometer, with an embedded autofocus system. Two different algorithms are implemented, for the continuous working on diffusive surfaces, with different levels of optical reflectivity. Thanks to the autofocus and the digital processing, the proposed sensor is easy to use and requires no assistance of a skilled operator.

© 2012 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: April 3, 2012
Manuscript Accepted: June 28, 2012
Published: July 20, 2012

Alessandro Magnani, Alessandro Pesatori, and Michele Norgia, "Self-mixing vibrometer with real-time digital signal elaboration," Appl. Opt. 51, 5318-5325 (2012)

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