  Following the recent establishment of the formalism of vectorial ptychography
[Ferrand et al., Opt. Lett. 40, 5144 (2015)], first measurements are reported
in the optical range, demonstrating the capability of the proposed method to
map the four parameters of the Jones matrix of an anisotropic specimen, and
therefore to quantify a wide range of optical material properties, including
power transmittance, optical path difference, diattenuation, retardance, and
fast-axis orientation.
