2021-04-122016-04-150146959215394794WOS;000374391900033PUBMED;27082353SCOPUS;2-s2.0-84964447106http://hdl.handle.net/10784/27932We propose a phase-retrieval method based on the numerical optimization of a new objective function using coherent phase-diversity images as inputs for the characterization of aberrations in coherent imaging systems. By employing a spatial light modulator to generate multiple-order spiral phase masks as diversities, we obtain an increase in the accuracy of the retrieved phase compared with similar state-of-the-art phase-retrieval techniques that use the same number of input images. We present simulations that show a consistent advantage of our technique, and experimental validation where our implementation is used to characterize a highly aberrated 4F optical system. (C) 2016 Optical Society of Americaenghttps://v2.sherpa.ac.uk/id/publication/issn/0146-9592info:eu-repo/semantics/articleImaging systemsLight modulatorsNumerical methodsOptical systemsOptimizationPhase shiftersCoherent illuminationCoherent imaging systemsExperimental validationsNumerical optimizationsObjective functionsPhase diversityRetrieved phaseSpatial light modulatorsSearch enginesalgorithmdevicesfluorescence imagingilluminationlight related phenomenaAlgorithmsLightingOptical ImagingOptical Phenomena2021-04-12Echeverri-Chacón, S.Restrepo, R.Cuartas-Vélez, C.Uribe-Patarroyo, N.10.1364/OL.41.001817