Direct spatially resolved snapshot interferometric phase and stokes vector extraction by using an imaging polarcam

We extract the 3D phase Δ and the Stokes parameter Δ₃of a transmissive anisotropic object spatially using an interferometric PolarCam. Four parallel interferograms with a phase shift of Δ/2 between the images are captured in a single snapshot and then reconstructed by the four-bucket algorithm to extract the 3D phase of the object. The Δ₃is then calculated directly from the obtained 3D phase Δ. The extracted results of Δ and Δ₃were compared with those extracted from the non-interferometric PolarCam and the Thorlabs polarimeter, and the results match quite well. The merit of using the interferometric PolarCam is that no mechanical movement mechanisms are included, and hence the Δ and Δ₃of the object can be extracted, with high accuracy and within a part of a second (three times faster than non-interferometric PolarCam and Thorlabs polarimeter methods). Moreover, this method can be applied in the field of the dynamic spectro.interferometric PolarCam and can be implemented using swept-wavelength approaches.