Results 11 to 20 of about 5,514,879 (214)
Backflow Transformation for A=3 Nuclei with Artificial Neural Networks
Yuanzineng kexue jishu, 2023 A novel variational wave function defined as a Jastrow factor multiplying a backflow transformed Slater determinant was developed for A=3 nuclei. The Jastrow factor and backflow transformation were represented by artificial neural networks.
YANG Yilong, ZHAO Pengwei
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Energy backflow in a focal spot of the cylindrical vector beam [PDF]
Компьютерная оптика, 2018 Using Richards-Wolf formulae it is shown that a tightly focused azimuthally-radially polarized m-th order laser beam with an arbitrary apodization function produces a reverse energy flow in the focal plane (m=2).
Sergey Stafeev +2 more
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Formation of an elongated region of energy backflow using ring apertures [PDF]
Компьютерная оптика, 2019 In this paper, we have investigated the focusing of a second-order cylindrical vector beam by using a high numerical aperture (NA) lens limited by a ring aperture using the Richards-Wolf formulae.
Sergey Stafeev, Victor Kotlyar
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Investigation of the influence of amplitude spiral zone plate parameters on produced energy backflow [PDF]
Компьютерная оптика, 2019 Investigation of the influence of parameters of silver, aluminum, gold, and chromium spiral zone plates on the longitudinal component of Umov-Pointing vector in produced optical vortices by using the frequency-dependent finite-difference time-domain ...
Elena Kozlova
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IET Electric Power ApplicationsThe energy backflow phenomenon is unavoidable in small dc‐link capacitor‐based PMSM drive systems, which is first identified and comprehensively analysed in this paper.
Jun Yan +5 more
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Spectroscopy of two-dimensional interacting lattice electrons using symmetry-aware neural backflow transformations [PDF]
Communications PhysicsNeural networks have shown to be a powerful tool to represent the ground state of quantum many-body systems, including fermionic systems. However, efficiently integrating lattice symmetries into neural representations remains a significant challenge.
Imelda Romero +2 more
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Focusing a second-order cylindrical vector beam with a gradient index Mikaelian lens [PDF]
Компьютерная оптика, 2020 In this paper, we numerically simulate the focusing of a second-order cylindrical vector beam with a gradient index Mikaelian lens. It is shown that the lens forms a region of the reverse energy flow near its output surface.
Sergey Stafeev +2 more
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Ultrashort Laser Pulse Focusing by Amplitude and Phase Zone Plates
Photonics, 2022 In this paper, using the frequency-dependent finite-difference time-domain method, a femtosecond cylindrical vector beam of second-order focusing binary zone plates (BZP) is investigated.
Elena Kozlova, Victor Kotlyar
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An orbital energy flow and a spin flow at the tight focus
Компьютерная оптика, 2021 We have shown that a reverse energy flow (negative projection of the Poynting vector onto the optical axis) at the sharp focus of an optical vortex with topological charge 2 and left-hand circular polarization arises because the axial spin flow has a ...
S.S. Stafeev
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Effects of fabrication errors on the focusing performance of a sector metalens [PDF]
Компьютерная оптика, 2018 Using e-beam lithography, a 16-sector spiral metalens was fabricated in an amorphous silicon, capable of converting linearly polarized incident light into an azimuthally polarized optical vortex. When illuminated by a 633-nm linearly polarized laser beam,
Sergey S. Stafeev +3 more
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