Some opportunities for vibration analysis with time averaging in digital Fresnel holography
Applied Optics, Vol. 44, Issue 3, pp. 337-343 (2005)
http://dx.doi.org/10.1364/AO.44.000337
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Abstract
Features offered by the combination of time averaging and digital Fresnel holography are investigated. In particular, we introduce the concept of the zero-crossing phase of Bessel fringes, which allows a highly contrasted determination of the dark fringes in the hologram. We discuss some particularities of the digital reconstruction and show how time-averaged digital holography can be used to study vibration drifts. Experiment results are presented in the case of a loudspeaker under a sinusoidal excitation; digital and analogical holography are also compared.
© 2005 Optical Society of America
OCIS Codes
(090.0090) Holography : Holography
(090.2880) Holography : Holographic interferometry
(100.2000) Image processing : Digital image processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
Citation
Pascal Picart, Julien Leval, Denis Mounier, and Samuel Gougeon, "Some opportunities for vibration analysis with time averaging in digital
Fresnel holography," Appl. Opt. 44, 337-343 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-3-337
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