Work

Joint estimation of object and probes in vectorial ptychography

Year: 2019

Type: article

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.

Source: Optics Express

DOI: 10.1364/oe.27.008143

Authors: Arthur Baroni, Marc Allain, Peng Li, Virginie Chamard, Patrick Ferrand

Language: English

Topic: Advanced X-ray Imaging Techniques

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: Horizon 2020 Framework Programme, H2020 European Research Council

Awards: Deciphering biomineralization mechanisms through 3D explorations of mesoscale crystalline structure in calcareous biomaterials, G7944295140