Results 51 to 60 of about 233 (127)
Polarization-Independent Metasurface Lens Based on Binary Phase Fresnel Zone Plate [PDF]
, 2020 Based on the binary phase Fresnel zone plate (FZP), a polarization-independent metasurface lens that is able to focus incident light with any polarization state, including circular, linear, and elliptical polarizations, has been proposed and investigated.
Baine, Jonathan, Li, Xing, Tang, Jing
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Vortex Beam Generation by Spin-Orbit Interaction with Bloch Surface Waves [PDF]
, 2020 partially_open7sìAxis-symmetric grooves milled in metallic slabs have been demonstrated to promote the transfer of Orbital Angular Momentum (OAM) from far- to near-field and vice versa, thanks to spin-orbit coupling effects involving Surface Plasmons (SP)
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Tunable optical metasurfaces enabled by chalcogenide phase-change materials: from the visible to the THz [PDF]
, 2020 Metasurfaces and nanoantennas are redefining what can be achieved in terms of optical beam manipulation, as they provide a versatile design platform towards moulding the flow of light at will. Yet, once a conventional metasurface is designed and realised,
Au, Y. -Y. +11 more
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Advanced Physics Research, Volume 4, Issue 2, February 2025.An overview of the fundamental principles of polarization manipulation, as well as its recent applications based on terahertz metasurfaces are summarized. New polarization detection methods such as polarization state conversion, polarization‐selective absorption, polarization‐selective focusing, and vector beam construction are discussed.
Yongliang Liu +6 more
wiley +1 more source
Advanced Photonics Research, Volume 6, Issue 1, January 2025.Meta‐atoms with half‐wave plate effect are utilized to compose the metasurface. Pancharatnam–Berry‐phase‐based plasmonic metasurfaces are presented to realize wavelength‐selective directional focusing and vortex at different predetermined positions on the same focal plane.
Heyi Zhang, Chunhui Zhu, Zhengyong Song
wiley +1 more source
A metalens for detecting fractional-order optical vortices
Компьютерная оптикаIn this work, a metalens for detecting an incident field with a fractional topological charge ranging from – 2 to 0 is proposed. The metalens is based on a spiral zone plate with a topological charge of 1.5.
A.G. Nalimov +3 more
doaj +1 more source
Using a metasurface to detect fractional topological charges at different wavelengths
Компьютерная оптикаThis paper demonstrates a possibility of detecting fractional topological charges (TC) using a metasurface in the near and far fields. The feasibility of detecting fractional TC at different wavelengths is studied.
A.G., V.V., Y.V., S.D.
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Tunable polarization-insensitive multifocal metalens based on an inverse design framework
Optics ExpressMultifocal metalenses are effective elements for longitudinal light field modulation and have important applications in long-focal depth imaging and three-dimensional display. However, the forward design method is subject to destructive interference generated by phase discontinuity, and cannot achieve high-efficiency, tunable multifocal metalenses ...
Yongqi Liu +3 more
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Tunable Multifocal THz Metalens Based on Metal-Insulator Transition of VO2 Film
, 2019 Recently, metalenses which consist of metasurface arrays, have attracted attention due to their more condensed size in comparison with conventional lenses. In this paper, we propose a reconfigurable coding metasurface hybridized with vanadium dioxide (VO2) for wavefront manipulation at terahertz (THz) frequencies. At room temperature, the unit-cell can
Kargar, Roya +2 more
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Multifocal laser direct writing through spatial light modulation guided by scalable vector graphics
, 2023 Multifocal laser direct writing (LDW) based on phase-only spatial light modulator (SLM) can realize flexible and parallel nanofabrication with high throughput potential.
Bai, Haoxin +6 more
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