In this paper, we demonstrate the recording of shear interferograms using diffractive polarization gratings and reconstruct complex wavefields using a known optimization algorithm. We validate the reconstruction of a complex wavefield by recording the object wave at a defocused distance and numerically refocusing the reconstructed wavefield. Finally, we discuss the impact of the shear selection strategy and aperture selection using the information density function and demonstrate this by reconstructing complex wavefields using experimental data.
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