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Dealing with speckle effects in self-mixing interferometry measurements

Author
Atashkhooei, R.; Royo, S.; Azcona, F. J.
Type of activity
Journal article
Journal
IEEE sensors journal
Date of publication
2013-05
Volume
13
Number
5
First page
1641
Last page
1647
DOI
https://doi.org/10.1109/JSEN.2013.2240156 Open in new window
Project funding
DPI2011-25525 - nuevo sensor interferometrico compacto para aplicaciones de metrologia sin contacto de alta resolucion
Repository
http://hdl.handle.net/2117/20480 Open in new window
Abstract
An analysis of speckle effects and the techniques to overcome them in self-mixing interferometry signals is presented. We characterize the effect of surface roughness and laser spot size on the speckle modulation of the signal, and then propose two simple experimental approaches to overcome the amplitude fading induced by the speckle effect. Unlike the techniques proposed until now, our first approach uses an adaptive optical element in the form of a voltage-programmable liquid lens, which adapt...
Citation
Atashkhooei, R.; Royo, S.; Azcona, F. Dealing with speckle effects in self-mixing interferometry measurements. "IEEE sensors journal", Maig 2013, vol. 13, núm. 5, p. 1641-1647.
Keywords
Displacement measurement, interferometry self-mixing, speckle effect
Group of research
CD6 - Centre for Sensors, Instruments and Systems Development
GREO - Optical Engineering Research Group

Participants

  • Atashkhooei, Reza  (author)
  • Royo Royo, Santiago  (author)
  • Azcona Guerrero, Francisco Javier  (author)