Article,

Phase retrieval using multiple illumination wavelengths

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Opt. Lett., 33 (4): 309--311 (February 2008)
DOI: 10.1364/OL.33.000309

Abstract

An iterative phase retrieval method is proposed, which uses a sequence of diffraction intensity patterns recorded at different wavelengths. This method has a rapid convergence, and a high immunity to noise and environmental disturbance. The wrap-free phase measurement range is also extended based on the principle of two-wavelength interferometry. Simulation and experimental results are presented to demonstrate the approach.

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