| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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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
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| Cite this article: |
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Dahi Ibrahim and Daesuk Kim 2020 Chin. Phys. Lett. 37 074201 |
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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.
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Received: 21 April 2020
Published: 21 June 2020
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| Fund: Supported by Samsung Research Funding & Incubation Center of Samsung Electronics under Grant No. SRFC-TA1703-11. |
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