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Proceedings Article

Time-averaged holographic interferometry using subtraction digital holography

[+] Author Affiliations
Nazif Demoli

Institute of Physics (Croatia)

Dalibor Vukicevic, Marc Torzynski

Lab. de Systemes Photoniques, Ecole Nationale Superieure de Physique (France) and Univ. Louis Pasteur (France)

Proc. SPIE 5457, Optical Metrology in Production Engineering, 643 (September 10, 2004); doi:10.1117/12.545442
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From Conference Volume 5457

  • Optical Metrology in Production Engineering
  • Wolfgang Osten; Mitsuo Takeda
  • Strasbourg, France | April 26, 2004

abstract

Time-averaged holographic interferometry is a known technique frequently used for analyzing vibration properties of objects. The development of array photo-detectors allowing long integration times enabled the capture of time-averaged holograms. A new technique called 'subtraction digital holography' has been recently developed for suppressing the zero-order disturbance in off-axis digital holography. In this work, we combine the time-averaged principle with subtraction digital holography technique. Results for a torsional micro-electro-mechanical systems (MEMS) and an oscillating membrane demonstrate clear hologram reconstructions covered with high-contrast fringes that describe the vibration modes.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Nazif Demoli ; Dalibor Vukicevic and Marc Torzynski
"Time-averaged holographic interferometry using subtraction digital holography", Proc. SPIE 5457, Optical Metrology in Production Engineering, 643 (September 10, 2004); doi:10.1117/12.545442; http://dx.doi.org/10.1117/12.545442


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