Imaging of a vibrating object by Sideband Digital Holography
Optics
2009-03-13 v3
Abstract
We obtain quantitative measurements of the oscillation amplitude of vibrating objects by using sideband digital holography. The frequency sidebands on the light scattered by the object, shifted by n times the vibration frequency, are selectively detected by heterodyne holography, and images of the object are calculated for different orders n. Orders up to n=120 have been observed, allowing the measurement of amplitudes of oscillation that are significantly larger than the optical wavelength. Using the positions of the zeros of intensity for each value of n, we reconstruct the shape of vibration the object.
Cite
@article{arxiv.0809.2196,
title = {Imaging of a vibrating object by Sideband Digital Holography},
author = {Fadwa Joud and Franck Laloë and Michael Atlan and Jean Hare and Michel Gross},
journal= {arXiv preprint arXiv:0809.2196},
year = {2009}
}
Comments
6 pages