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|Type:||Artigo de periódico|
|Title:||Self-calibrating speckle photo-electromotive force for large vibration amplitude measurement|
|Abstract:||We report the use of the photo-electromotive-force effect in a speckled pattern of light on a photorefractive Bi12TiO20 crystal to measure the amplitude of transverse vibrations in a self-calibrating mode. 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. Small differences between experiment and theory are still under research.|
|Editor:||Iop Publishing Ltd|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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