Speckle photo-electromotive force for large transverse vibration amplitude measurement

L. Mosquera; Jaime Frejlich

doi:10.1117/12.579764

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22 June 2004 Speckle photo-electromotive force for large transverse vibration amplitude measurement

L. Mosquera, Jaime Frejlich

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Proceedings Volume 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2004) https://doi.org/10.1117/12.579764
Event: Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 2004, Ancona, Italy

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.

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L. Mosquera and Jaime Frejlich "Speckle photo-electromotive force for large transverse vibration amplitude measurement", Proc. SPIE 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 June 2004); https://doi.org/10.1117/12.579764

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