Example of Gerchberg-Saxton iterative phase retrieval algorithm applied for reconstruction of the complex-valued wavefront distribution from two intensity images: real space image and diffraction pattern of a complex-valued sample. The sample amplitude is binary cat cartoon with maximum of 1, the sample phase is word "cat" with maximum of 1 radian.
Tatiana Latychevskaia, "Iterative phase retrieval in coherent diffractive imaging: practical issues", Applied Optics 57(25), 7187 - 7197 (2018)
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