Iterative algorithm for phase extraction from interferograms with random and spatially nonuniform phase shifts
Applied Optics, Vol. 47, Issue 3, pp. 480-485 (2008)
http://dx.doi.org/10.1364/AO.47.000480
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Abstract
An advanced iterative algorithm is presented to extract phase distribution from randomly and spatially nonuniform phase-shifted interferograms. The proposed algorithm divides the interferograms into small blocks and retrieves local phase shifts accurately by iterations. Therefore, the phase distribution can be calculated with high precision by eliminating the effect of tilts occurring during phase shifting.
Simulated results and experiments demonstrate that the proposed algorithm exhibits high precision and converges faster than previous algorithms even when the tilt errors are up to
© 2008 Optical Society of America
OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
ToC Category:
Interferometry
History
Original Manuscript: October 1, 2007
Manuscript Accepted: November 5, 2007
Published: January 18, 2008
Citation
Jiancheng Xu, Qiao Xu, and Liqun Chai, "Iterative algorithm for phase extraction from interferograms with random and spatially nonuniform phase shifts," Appl. Opt. 47, 480-485 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-3-480
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