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Energy rule for enhancing the spin Hall effect in superposition of axisymmetric beams with cylindrical and linear polarization
A.A. Kovalev 1,2, V.V. Kotlyar 1,2

1 Image Processing Systems Institute, NRC "Kurchatov Institute",
443001, Samara, Russia, Molodogvardeyskaya 151;
2 Samara National Research University,
443086, Samara, Russia, Moskovskoye Shosse 34

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DOI: 10.18287/2412-6179-CO-1480

Pages: 649-654.

Full text of article: Russian language.

Abstract:
We study the spin angular momentum of a superposition of two vector light beams radial symmetry, one has cylindrical polarization and another – linear. Both beams can have an arbitrary radial shape. An analytical expression is obtained for the spin angular momentum and two its properties are proven. The first one is that changing weight coefficients of the superposition does not changes the shape of the spin angular momentum density distribution, whereas the intensity shape can change. The second property is that the maximal spin angular momentum density is achieved when both constituent beams in the superposition have equal energy.

Keywords:
paraxial vector beam, cylindrical polarization, linear polarization, spin Hall effect, spin angular momentum.

Citation:
Kovalev AA, Kotlyar VV. Energy rule for enhancing the spin Hall effect in superposition of axisymmetric beams with cylindrical and linear polarization. Computer Optics 2024; 48(5): 649-654. DOI: 10.18287/2412-6179-CO-1480.

Acknowledgements:
This work was financially supported by the Russian Science Foundation under project No. 23-12-00236 (Theory and numerical simulation). This work was also performed within the State assignment of NRC "Kurchatov Institute" (Introduction and Conclusion).

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