Multi-height metasurface for wavefront manipulation fabricated by direct laser writing lithography. [PDF]
Nanophotonics, 2023 We introduce two types of dielectric metasurfaces, consisting of 3 × 3 regions, which manipulate wavefront by different feature heights. Both polarization-dependent and polarization-independent metasurfaces are realized for phase depth of 0 ∼ 2π at 1550 ...
Ye F +7 more
europepmc +4 more sources
Tunable circular dichroism in all-dielectric metasurface with efficient wavefront manipulation
Results in Physics, 2023 In this paper, an all-dielectric metasurface based on phase-change material Ge2Sb2Se4Te1 (GSST) working in the mid-infrared band is designed, and combined with Pancharatnam-Berry (PB) phase to realize multifunctional metasurfaces.
Zhuolin Shi +4 more
doaj +3 more sources
Broadband Waterborne Multiphase Pentamode Metastructure with Simultaneous Wavefront Manipulation and Energy Absorption Capabilities. [PDF]
Materials (Basel), 2023 Acoustic metastructures are artificial structures which can manipulate the wavefront in sub-wavelength dimensions, and previously proposed acoustic metastructures have been mostly realized with single materials.
An Y, Zou H, Zhao A.
europepmc +4 more sources
Nonlocal metasurfaces for spectrally decoupled wavefront manipulation and eye tracking [PDF]
Nature Nanotechnology, 2021 Metasurface-based optical elements typically manipulate light waves by imparting space-variant changes in the amplitude and phase with a dense array of scattering nanostructures. The highly-localized and low optical-quality-factor (Q) modes of nanostructures are beneficial for wavefront-shaping as they afford quasi-local control over the ...
Soo Jin Kim +4 more
arxiv +7 more sources
Multifunctional Janus metasurfaces achieving arbitrary wavefront manipulation at dual frequency
Materials & Design, 2022 Metasurface with simultaneous control of amplitude, phase, and polarization of electromagnetic (EM) waves has drawn great attention in modern optics and photonics.
Ziyi Tang +13 more
doaj +3 more sources
Reflected wavefront manipulation by acoustic metasurface with anisotropic local resonant units [PDF]
, 2019 In this work, we develop the gradient metasurface is constructed of a locally anisotropic resonant structure, comprising a steel cylinder with an elliptical rubber coating embedded in epoxy. The deflective angles of rubber ellipses in the locally anisotropic resonant unit provide a method of controlling the reflected phase.
Meiyu Liu, Pan Li, Qiujiao Du, Pai Peng
arxiv +3 more sources
All-Dielectric Huygens' Metasurface for Wavefront Manipulation in the Visible Region. [PDF]
Materials (Basel), 2021 All-dielectric Huygens’ metasurfaces have been widely used in wavefront manipulation through multipole interactions. Huygens’ metasurfaces utilize the superposition between an electric dipole and a magnetic dipole resonance to realize transmission enhancement and an accumulated 2π phase change.
Wu T +5 more
europepmc +5 more sources
Light-controllable metasurface for microwave wavefront manipulation
Optics Express, 2020 Applying multiple physical fields to artificial manipulate electromagnetic waves is a highly stirring research. In this paper, we creatively combine light control with microwave scattering, realizing an optically coding metasurface for beam deflection based on anomalous reflection.
Lei Chen +5 more
openalex +4 more sources
Heterogeneous Amplitude−Phase Metasurface for Distinct Wavefront Manipulation [PDF]
Advanced Photonics Research, 2021 Achieving simultaneously multiple distinct wavefront manipulations using a single flat plate is pivotal in increasing the integration level and information capacity of an optoelectronic system.
Chaohui Wang +6 more
doaj +3 more sources
Enhancement of THz generation by feedback-optimized wavefront manipulation
Optics Express, 2017 We apply active feedback optimization methods to pyroelectric measurements of a THz signal generated by four wave mixing in air using 1 mJ to 12 mJ, 35 fs laser pulses operating at 12 kHz repetition rate. A genetic algorithm, using the THz signal as a figure of merit, determines the voltage settings to a deformable mirror and results in up to a 6 fold ...
J. Hah +6 more
openalex +6 more sources