Twin-Sensitivity Measurement by Spatial Multiplexing of Digitally Recorded Holograms
Applied Optics, Vol. 42, Issue 11, pp. 1947-1957 (2003)
http://dx.doi.org/10.1364/AO.42.001947
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Abstract
We present an all-numeric multiplexing/demultiplexing technique for digitally recorded holograms that allow the simultaneous determination of the in-plane and the out-of-plane components of the displacement vector of an object submitted to some loading. The twin-sensitivity measurement is obtained from two different illumination directions that give two sensitivity vectors. The spatial multiplexing is achieved by an incoherent mixing of two duplets of coherent waves that produce holograms carried with orthogonal polarized reference waves. The spatial demultiplexing uses the autocorrelation function of the multiplexed holograms as a position estimator. The estimator then enables the determination of the pixel-to-pixel correspondence between the holograms for the double component determination. Results of the experiment are presented.
© 2003 Optical Society of America
[Optical Society of America ]
OCIS Codes
(090.0090) Holography : Holography
(090.2880) Holography : Holographic interferometry
(100.0100) Image processing : Image processing
(100.2000) Image processing : Digital image processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
Citation
Pascal Picart, Eric Moisson, and Denis Mounier, "Twin-Sensitivity Measurement by Spatial Multiplexing of Digitally Recorded Holograms," Appl. Opt. 42, 1947-1957 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-11-1947
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