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Formation and transformation of polarization features of vector beams during off-axis interference
M.V. Bretsko1, S.I. Yakubov1, S.I. Khalilov1, Ya.E. Akimova1, A.V. Volyar1

1Physics and Technology Institute of V.I. Vernadsky Crimean Federal University, Prospekt Akademika Vernadskogo 4, Simferopol, 295007, Republic of Crimea, Russia

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DOI: 10.18287/COJ1740

Article ID: 1740

Abstract:
This paper investigates the formation of polarization singularities arising from off-axis interference of vector beams with different symmetries. An analytical model is proposed for the superposition of two spatially shifted beams with arbitrary topological charges and phase parameters. It is shown that in the overlap region, polarization features such as V- and C-points as well as stable configurations of the lemon and star types can arise. Based on the Stokes parameters, a classification of these features is carried out and the conditions for their formation are determined. Numerical simulations make it possible to determine the optimal beam offset at which a symmetric polarization singularity is formed at the center. The results are confirmed experimentally.

Keywords:
optical vortex, polarization singularity, non-coaxial interference.

Citation:
Bretsko MV, Yakubov SI, Khalilov SI, Akimova YaE, Volyar AV. Formation and transformation of polarization features of vector beams during off-axis interference. Computer Optics 2026; 50(2): 1740. DOI: 10.18287/COJ1740.

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