Fringe-free holographic measurements of large-amplitude vibrations
Optics Letters, Vol. 34, Issue 23, pp. 3698-3700 (2009)
http://dx.doi.org/10.1364/OL.34.003698
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Abstract
In the measurement of the amplitude of vibration of objects, holographic imaging techniques usually involve fringe counting; because of the limited resolution of the 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 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
© 2009 Optical Society of America
OCIS Codes
(040.2840) Detectors : Heterodyne
(090.1760) Holography : Computer holography
(100.2000) Image processing : Digital image processing
(200.4880) Optics in computing : Optomechanics
ToC Category:
Holography
History
Original Manuscript: August 19, 2009
Manuscript Accepted: September 25, 2009
Published: November 24, 2009
Citation
F. Joud, F. Verpillat, F. Laloë, M. Atlan, J. Hare, and M. Gross, "Fringe-free holographic measurements of large-amplitude vibrations," Opt. Lett. 34, 3698-3700 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-23-3698
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