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Proceedings Paper

Time-averaged vibration mode viewing with DSPI
Author(s): F. Garoi; D. Apostol; A. Sima; V. Damian; P. C. Logofatu; V. Nascov; Iuliana Iordache; Mihaela Bojan
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Paper Abstract

We discuss an experiment for detecting small deformations by speckle interferometry. Vibration modes of an aluminium plate are observed by digital speckle pattern interferometry (DSPI). A Mach-Zender interferometer arrangement is used and the speckle interferograms are recorded with a CCD camera and processed on a computer. These fringes depend on the path differences due to the vibration of the aluminium plate from its original state. Vibration amplitudes between 0.3-0.6 &mgr; were measured for seven vibration modes.

Paper Details

Date Published: 8 May 2007
PDF: 7 pages
Proc. SPIE 6635, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III, 66350V (8 May 2007); doi: 10.1117/12.741925
Show Author Affiliations
F. Garoi, National Institute for Lasers, Plasma and Radiation Physics (Romania)
D. Apostol, National Institute for Lasers, Plasma and Radiation Physics (Romania)
A. Sima, National Institute for Lasers, Plasma and Radiation Physics (Romania)
V. Damian, National Institute for Lasers, Plasma and Radiation Physics (Romania)
P. C. Logofatu, National Institute for Lasers, Plasma and Radiation Physics (Romania)
V. Nascov, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Iuliana Iordache, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Mihaela Bojan, National Institute for Lasers, Plasma and Radiation Physics (Romania)


Published in SPIE Proceedings Vol. 6635:
Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies III

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