Direct Spatially Resolved Snapshot Interferometric Phase and Stokes Vector Extraction by Using an Imaging PolarCam
Dahi Ibrahim1,2 and Daesuk Kim1*
1Division of Mechanical System Engineering, Chonbuk National University, Jeonju 54896, Korea 2Engineering and Surface Metrology Lab, National Institute of Standards, Tersa St., El haram, El Giza, Egypt
Abstract：We extract the 3D phase $\varDelta$ and the Stokes parameter $S_{3}$ of a transmissive anisotropic object spatially using an interferometric PolarCam. Four parallel interferograms with a phase shift of $\pi$/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 $S_{3}$ is then calculated directly from the obtained 3D phase $\varDelta$. The extracted results of $\varDelta$ and $S_{3}$ were 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 $\varDelta$ and $S_{3}$ of 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.
. [J]. 中国物理快报, 2020, 37(7): 74201-.
Dahi Ibrahim and Daesuk Kim. Direct Spatially Resolved Snapshot Interferometric Phase and Stokes Vector Extraction by Using an Imaging PolarCam. Chin. Phys. Lett., 2020, 37(7): 74201-.
2020, Vol. 37 
