Search Results - "Nalimov, A."

A vector optical vortex generated and focused using a metalens by Kotlyar, V., Nalimov, A.

“…Using a FDTD-aided numerical simulation we show that a sharp focal spot can be generated by a spiral metalens made of amorphous silicon, with unit topological…”
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Tight focusing of laser light using a chromium Fresnel zone plate by Kotlyar, V V, Stafeev, S S, Nalimov, A G, Kotlyar, M V, O'Faolain, L, Kozlova, E S

“…Using near-field scanning microscopy, we demonstrate that a 15-µm zone plate fabricated in a 70-nm chromium film sputtered on a glass substrate and having a…”
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Thin high numerical aperture metalens by Kotlyar, V V, Nalimov, A G, Stafeev, S S, Hu, Changyu, O'Faolain, L, Kotlyar, M V, Gibson, D, Song, S

“…We designed, fabricated, and characterized a thin metalens in an amorphous silicon film of diameter 30 µm, focal length equal to the incident wavelength 633…”
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Effect of Optical “Dipoles” on the Topological Charge of a Beam by Nalimov, A G, Kotlyar, V V

“…In this work, using the Rayleigh-Sommerfeld integral and the Berry formula, the topological charge (TC) of a Gaussian optical vortex with an initial fractional…”
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Microlens-aided focusing of linearly and azimuthally polarized laser light by Stafeev, S S, Nalimov, A G, Kotlyar, M V, Gibson, D, Song, S, O'Faolain, L, Kotlyar, V V

“…We have investigated a four-sector transmission polarization converter (4-SPC) for a wavelength of 633 nm, that enables the conversion of a linearly polarized…”
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Longitudinal component of the Poynting vector of a tightly focused optical vortex with circular polarization by Stafeev, S., Nalimov, A.

“…We numerically investigated the focusing of optical vortices with the wavelength λ = 532 nm and right-hand circular polarization by using a diffractive lens…”
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Superposition of Two Converging and Diverging Coaxial Hypergeometric Beams by Kotlyar, V. V., Kovalev, A. A., Nalimov, A. G.

“…The diffraction of elegant vortex hypergeometric (HyG) laser beams with a parabolic initial wavefront in a homogeneous medium is considered. While HyG beams…”
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Energy backflow in a focal spot of the cylindrical vector beam by Stafeev, S., Nalimov, A., Kotlyar, V.

“…Using Richards-Wolf formulae it is shown that a tightly focused azimuthally-radially polarized m-th order laser beam with an arbitrary apodization function…”
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A spirally rotating backward flow of light by Kotlyar, V., Nalimov, A.

“…Using Richards-Wolf formulas, we show that when a left-hand circularly polarized optical vortex with the topological charge 3 is sharply focused in an…”
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Simulation of hard x-ray focusing using an array of cylindrical micro-holes in a diamond film by Nalimov, A., Kotlyar, V., Konov, V.

“…The focusing of hard x-rays was numerically simulated using a beam propagation method implemented in the BeamPROP software package and a Rayleigh-Sommerfeld…”
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Sharp focusing of light using a planar gradient microlens by Nalimov, A., Kotlyar, V.

“…It is shown numerically that using planar gradient microlenses, the coherent radiation can be focused in a narrow line of width λ/38 and length λ/5.5. The…”
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Tight Focusing of a Second-order Cylindrical Vector Beam by Stafeev, S. S., Nalimov, A. G., Kotlyar, V. V.

“…In this paper we have investigated the tight focusing of a second-order cylindrical vector beam. It was shown numerically by Richarsd-Wolf formulae and…”
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Backward Energy Flux in Sharp Focus of Beams with Linear and Circular Polarization by Kotlyar, V. V., Nalimov, A. G., Stafeev, S. S.

“…Using the FDTD-aided numerical simulation, we show that uniform linearly or circularly polarized light passing through the described optical metasurface and…”
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The near-axis backflow of energy in a tightly focused optical vortex with circular polarization by Kotlyar, V., Nalimov, A., Stafeev, S.

“…Using the Richards-Wolf formulae for a diffractive lens, we show that in the focal plane of a sharply focused left-hand circularly polarized optical vortex…”
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Reflected four-zones subwavelenghth mictooptics element for polarization conversion from linear to radial by Nalimov, A., O'Faolain, L., Stafeev, S., Shanina, M., Kotlyar, V.

“…A four zone subwavelength binary diffraction optical micro element (size of 100x100 mkm) for polarization transformation from linear to radial was calculated…”
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Comparative modeling of amplitude and phase zone plates by Kozlova, E., Kotlyar, V., Nalimov, A.

“…In this paper using FDTD-method, we conduct a comparative modeling of a sharp focus of the laser light by using binary-phase and binary-amplitude Fresnel zone…”
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Subwavelength focusing of laser light of a mixture of linearly and azimuthally polarized beams by Stafeev, S., Nalimov, A., Kotlyar, M., O’Faolain, L.

“…We investigated a four-zone transmission polarization converter (4-TPC) for a wavelength of 633 nm, enabling the conversion of a linearly polarized incident…”
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Use of combined zone plates as imaging optics for hard x-rays by Nalimov, A., Kotlyar, V.

“…We have carried out modeling of an image formation in hard x-ray coherent radiation using a Rayleigh-Sommerfeld integral. Combined zone plates have been used…”
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Backward flow of energy for an optical vortex with arbitrary integer topological charge by Kotlyar, V., Kovalev, A., Nalimov, A.

“…We analyze the sharp focusing of an arbitrary optical vortex with the integer topological charge m and circular polarization in an aplanatic optical system…”
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Binary diffraction gratings for controlling polarization and phase of laser light [review] by Stafeev, S., Nalimov, A., O'Faolain, L., Kotlyar, M.

“…Components of thin microoptics with nanostructured surface for polarization and phase control are investigated. These components include transmitting or…”
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