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Proceedings Paper

Speckle photo-electromotive force for large transverse vibration amplitude measurement
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Paper Abstract

We report the use of photo-electromotive-force effect in a speckled pattern of light onto a photorefractive Bi12TiO20 crystal to measure the amplitude of transverse vibrations. Our theoretical model shows that, for vibrations much faster than the photorefractive response time, the photo-emf signal exhibits a maximum at a characteristic vibration amplitude value that may be used to calibrate the photo-emf sensor.

Paper Details

Date Published: 22 June 2004
PDF: 6 pages
Proc. SPIE 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 June 2004); doi: 10.1117/12.579764
Show Author Affiliations
L. Mosquera, Univ. Estadual de Campinas (Brazil)
Jaime Frejlich, Univ. Estadual de Campinas (Brazil)


Published in SPIE Proceedings Vol. 5503:
Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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