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Phase-shifting interferometry based on induced vibrations |
Optics Express, Vol. 19, Issue 2, pp. 584-596 (2011)
http://dx.doi.org/10.1364/OE.19.000584
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Abstract
The presence of uncontrolled mechanical vibrations is typically the main precision-limiting factor of a phase-shifting interferometer. We present a method that instead of trying to insolate vibrations; it takes advantage of their presence to produce the different phase-steps. The method is based on spatial and time domain processing techniques to compute first the different unknown phase-steps and then reconstruct the phase from these tilt-shifted interferograms. In order to compensate the camera movement, it is needed to perform an affine registration process between the different interferograms. Simulated and experimental results demonstrate the effectiveness of the proposed technique without the use of any phase-shifter device.
© 2011 OSA
OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: May 18, 2010
Revised Manuscript: August 2, 2010
Manuscript Accepted: August 4, 2010
Published: January 5, 2011
Citation
J. Vargas, J. Antonio. Quiroga, A. Álvarez-Herrero, and T. Belenguer, "Phase-shifting interferometry based on induced vibrations," Opt. Express 19, 584-596 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-2-584
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References
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