Fringe free holographic measurements of large amplitude vibrations - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Optics Letters Année : 2009

Fringe free holographic measurements of large amplitude vibrations

Résumé

In the measurement of the amplitude of vibration of objects, holographic imaging techniques usually involve fringe counting; due to the limited resolution of images, measurements of large amplitudes are not accessible. We demonstrate a technique that suppresses the necessity of fringe counting: frequency sideband imaging, where the order of the sideband is considered as a marker of the amplitude. The measurement is completely local: no comparison with another reference point on the object is necessary. It involves a sharp variation of a signal, which makes it robust against perturbations. The method is demonstrated in an experiment made with a vibrating clarinet reed; phase modulations as large as $1000$ radians have been measured.
Fichier principal
Vignette du fichier
anche-unwrapping_revised-FL.pdf (739.97 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00468198 , version 1 (30-03-2010)

Identifiants

Citer

Fadwa Joud, Frédéric Verpillat, Franck Laloë, Atlan Michael, Jean Hare, et al.. Fringe free holographic measurements of large amplitude vibrations. Optics Letters, 2009, 34 (23), pp.3698. ⟨hal-00468198⟩
115 Consultations
99 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More