A continuous plane of polarization rotator and detector based on the liquid crystal theta-cell

Deepak Kararwal; Rahul Panchal; Aloka Sinha

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arXiv · 2407.14193

A continuous plane of polarization rotator and detector based on the liquid crystal theta-cell

Deepak Kararwal·Rahul Panchal·Aloka Sinha

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Abstract

Modulation of the polarization state of optical beams is crucial in advanced optical applications such as polarization microscopy, polarization rotation, and medical imaging. We demonstrate a continuous polarization rotator by utilizing the liquid crystals (LC) in theta-cell configuration comprising of circular and parallel alignment of LC on two aligning glass substrates. A rotation of plane of polarization up to 160 degree is observed using Stokes polarimetry and substantiated by the mathematical analysis using Mueller matrix formalism. Further, the device is demonstrated as a plane of polarization detector with high precision detection angle. The plane of polarization is analyzed through single shot imaging of the intensity distribution of transmitted light through the LC theta-cell.

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Deepak Kararwal, Rahul Panchal, Aloka Sinha. 2024-07-19. A continuous plane of polarization rotator and detector based on the liquid crystal theta-cell. https://arxiv.org/abs/2407.14193

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