Controlled phase wafers based on inhomogeneously anisotropic nematic liquid crystals
Aslanyan L. S. 1, Ayvazyan A. E. 1
1Yerevan State University, Yerevan, Armenia
Email: leon@ysu.am
The peculiarities of polarized light propagation in a thin layer of nematic liquid crystal in the presence of an electrostatic field that perturbs the uniform distribution of the director (unit vector parallel to the local optical axis) are considered. The analysis is conducted using the quasi-isotropic approximation of geometric optics. From unified positions, approximate equations, their solutions, and analytical expressions for the Stokes parameters are obtained. Using these expressions, the spatial evolution of light polarization inside the sample, the dependence of the output light polarization state on the applied field strength, and the potential applications of such controllable phase plates of various types are analyzed. Keywords: light polarization, nematic liquid crystals.
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