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Proceedings Paper

Advances in real-time holographic interferometry for the measurement of vibrations and deformations
Author(s): Jaime Frejlich; Paulo Magno Garcia; Agnaldo A. Freschi
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Paper Abstract

We describe the latest improvements in holographic interferometry that enable the real-time measurement of vibrational modes and static deformations in surfaces using low power laser illumination and a photorefractive Bi12TiO20 crystal as the recording medium. An efficient setup has been developed where the most critical elements have been optimized: target illumination and backscattered light collection, distribution of light between the object and reference beams, and stabilized system operation. Experimental results for vibration and deformation measurements are reported.

Paper Details

Date Published: 1 June 1998
PDF: 10 pages
Proc. SPIE 3411, Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (1 June 1998); doi: 10.1117/12.307694
Show Author Affiliations
Jaime Frejlich, Univ. Estadual de Campinas (Brazil)
Paulo Magno Garcia, Univ. Estadual de Campinas (Brazil)
Agnaldo A. Freschi, Univ. Estadual de Campinas (Brazil)


Published in SPIE Proceedings Vol. 3411:
Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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