ECM - Ecole Centrale de Marseille : UMR7249 (Pôle de l'étoile, Technopole de Château-Gombert, 38 rue Frédéric Joliot-Curie, 13013 Marseille, France - France)
Abstract : Vectorial ptychography has been recently introduced to reconstruct the Jones matrix of an anisotropic object by means of series of ptychographic measurements performed using a set of polarized illumination probes in conjugation with various analyzers. So far, the probes were assumed to be completely known (amplitude, wavefront, state of polarization), which is rarely the case in practice. Here we address the issue of the joint estimating of the set of polarized illumination probes together with the Jones matrix of an anisotropic object in vectorial ptychography. We propose an algorithm based on a conjugate gradient strategy. Experimental results are reported, showing an improvement on the object estimate, in addition to a precise reconstruction of the probes.
https://hal-amu.archives-ouvertes.fr/hal-02059897
Contributor : Patrick Ferrand
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Submitted on : Thursday, March 7, 2019 - 9:14:29 AM
Last modification on : Wednesday, April 24, 2019 - 9:38:14 AM
Arthur Baroni, Marc Allain, Peng Li, Virginie Chamard, Patrick Ferrand. Joint estimation of object and probes in vectorial ptychography. Optics Express, Optical Society of America, 2019, 27 (6), pp.8143. ⟨10.1364/OE.27.008143⟩. ⟨hal-02059897⟩
