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Proceedings Paper

Time-averaged holographic interferometry using subtraction digital holography
Author(s): Nazif Demoli; Dalibor Vukicevic; Marc Torzynski
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Paper 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.

Paper Details

Date Published: 10 September 2004
PDF: 8 pages
Proc. SPIE 5457, Optical Metrology in Production Engineering, (10 September 2004); doi: 10.1117/12.545442
Show Author Affiliations
Nazif Demoli, Institute of Physics (Croatia)
Dalibor Vukicevic, Lab. de Systemes Photoniques, Ecole Nationale Superieure de Physique (France)
Univ. Louis Pasteur (France)
Marc Torzynski, Lab. de Systemes Photoniques, Ecole Nationale Superieure de Physique (France)
Univ. Louis Pasteur (France)


Published in SPIE Proceedings Vol. 5457:
Optical Metrology in Production Engineering
Wolfgang Osten; Mitsuo Takeda, Editor(s)

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