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Your search keyword '"Mokhun, I."' showing total 97 results
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97 results on '"Mokhun, I."'

1. Energy currents in the field formed by waves with different frequencies

Author

Mokhun, I., Bodyanchuk, I., Galushko, K., Galushko, Y., Val, O., and Viktorovskaya, Y.

Subjects
Physics - Optics
Abstract

The behavior of instantaneous and averaged vectors of the Poynting vector transverse component for the resulting field formed as a superposition of waves with different frequencies and different polarizations is considered. Results of computer simulation and experimental data are obtained for the superposition of frequently differed vortices with different and the same signs of topological charges. It is shown that the captured particle rotates due to the orbital momentum and substantial increase of particle rotation speed in the case of polychromatic radiation as opposed to monochromatic is observed., Comment: 5 pages, 6 figures

Published
2020

15. Optical correlation algorithm for reconstructing phase skeleton of complex optical fields for solving the phase problem

Author

Angelsky, O. V., Gorsky, M. P., Hanson, Steen Grüner, Lukin, V. P., Mokhun, I. I., Polyanskii, P. V., Ryabiy, P. A., Angelsky, O. V., Gorsky, M. P., Hanson, Steen Grüner, Lukin, V. P., Mokhun, I. I., Polyanskii, P. V., and Ryabiy, P. A.

Abstract

We propose an optical correlation algorithm illustrating a new general method for reconstructing the phase skeleton of complex optical fields from the measured two-dimensional intensity distribution. The core of the algorithm consists in locating the saddle points of the intensity distribution and connecting such points into nets by the lines of intensity gradient that are closely associated with the equi-phase lines of the field. This algorithm provides a new partial solution to the inverse problem in optics commonly referred to as the phase problem.

Published
2014

17. Circular motion of particles suspended in a Gaussian beam with circular polarization validates the spin part of the internal energy flow

Author

Angelsky, O. V., Bekshaev, A. Ya., Maksimyak, P. P., Maksimyak, A. P., Mokhun, I. I., Hanson, Steen Grüner, Zenkova, C. Yu., Tyurin, A. V., Angelsky, O. V., Bekshaev, A. Ya., Maksimyak, P. P., Maksimyak, A. P., Mokhun, I. I., Hanson, Steen Grüner, Zenkova, C. Yu., and Tyurin, A. V.

Abstract

Non-spherical dielectric microparticles were suspended in a water-filled cell and exposed to a coherent Gaussian light beam with controlled state of polarization. When the beam polarization is linear, the particles were trapped at certain off-axial position within the beam cross section. After switching to the right (left) circular polarization, the particles performed spinning motion in agreement with the angular momentum imparted by the field, but they were involved in an orbital rotation around the beam axis as well, which in previous works [Y. Zhao et al, Phys. Rev. Lett. 99, 073901 (2007)] was treated as evidence for the spin-to orbital angular momentum conversion. Since in our realization the moderate focusing of the beam excluded the possibility for such a conversion, we consider the observed particle behavior as a demonstration of the macroscopic “spin energy flow” predicted by the theory of inhomogeneously polarized paraxial beams [A. Bekshaev et al, J. Opt. 13, 053001 (2011)].

Published
2012

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