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Proceedings Paper

A 14-channel multipoint vibrometry system using dynamic holography
Author(s): Tobias Haist; Christian Lingel; Wolfgang Osten; Marcus Winter; Moritz Giesen; Christian Rembe
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Paper Abstract

We report on a new system for measuring the vibration simultaneously at multiple positions (multipoint vibrometry) using multiple individual channels, each consisting of a complete heterodyne interferometer. The core element for controlling the three-dimensional position of the measurement spots is a liquid crystal on silicon (LCoS) HDTV spatial light modulator. Unwanted modulation effects, especially unwanted diffraction orders and crosstalk effects are taken into account for the design of the optical system and the computation of the holograms. We present a general discussion with an emphasis on the LCoS related considerations and first measurement results.

Paper Details

Date Published: 13 September 2012
PDF: 8 pages
Proc. SPIE 8494, Interferometry XVI: Applications, 849406 (13 September 2012); doi: 10.1117/12.929734
Show Author Affiliations
Tobias Haist, Univ. Stuttgart (Germany)
Christian Lingel, Univ. Stuttgart (Germany)
Wolfgang Osten, Univ. Stuttgart (Germany)
Marcus Winter, Polytec GmbH (Germany)
Moritz Giesen, Polytec GmbH (Germany)
Christian Rembe, Polytec GmbH (Germany)

Published in SPIE Proceedings Vol. 8494:
Interferometry XVI: Applications
Cosme Furlong; Christophe Gorecki; Erik L. Novak, Editor(s)

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