Polarization-Insensitive Beam Splitter with Variable Split Angles and Ratios Based on Phase Gradient Metasurfaces [PDF]
Nanomaterials, 2021 The beam splitter is a common and critical element in optical systems. Traditional beam splitters composed of prisms or wave plates are difficult to be applied to miniaturized optical systems because they are bulky and heavy.
Quan He, Zhe Shen
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Wideband RCS Reduction by Single-Layer Phase Gradient Modulated Surface [PDF]
Sensors, 2022 This paper deals with the design and fabrication of an unpretentious (single-layer, without any lump element) broadband (97%, 11.3–32.3 GHz) radar cross-section reduction (RCSR) modulated surface (MS).
Yousef Azizi +3 more
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Graphene-Enabled Tunable Phase Gradient Metasurface for Broadband Dispersion Manipulation of Terahertz Wave [PDF]
Micromachines, 2023 With the increasing demand for the miniaturization and flexibility of optical devices, graphene-based metasurfaces have emerged as a promising ideal design platform for realizing planar and tunable electromagnetic or optical devices.
Yin Zhang, Yijun Feng, Junming Zhao
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A metacontinuum model for phase gradient metasurfaces [PDF]
Scientific Reports, 2023 Acoustic metamaterials and metasurfaces often present complex geometries and microstructures. The development of models of reduced complexity is fundamental to alleviate the computational cost of their analysis and derivation of optimal designs. The main
Giorgio Palma, Umberto Iemma
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Quantitative phase gradient microscopy with spatially entangled photons [PDF]
Nature CommunicationsWe present an entanglement-based quantitative phase gradient microscopy technique that employs principles from quantum ghost imaging and ghost diffraction.
Yingwen Zhang +4 more
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Determining the Phase Gradient Parameter of Three-Dimensional Polymorphic Beams
Frontiers in Physics, 2022 Three-dimensional polymorphic beams (3D PBs) with arbitrary 3D curves have drawn increasing attention. In this paper, we introduce the concept of phase gradient parameter (PGP) to describe the accumulation of phase along the curvilinear trajectory of a ...
Xue Yun +15 more
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Optical Spin Hall Effect in Closed Elliptical Plasmonic Nanoslit with Noncircular Symmetry
Nanomaterials, 2021 We investigated the optical spin Hall effect (OSHE) of the light field from a closed elliptical metallic curvilinear nanoslit instead of the usual truncated curvilinear nanoslit.
Xiaorong Ren +9 more
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IEEE Photonics Journal, 2020 We proposed a method for driving metal nanoparticles in the focal field by cylindrical metalens with phase gradient. It was found that the introduced gradient phase would not affect the formation of the focal line, where metal nanoparticles can be ...
Zhe Shen +3 more
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Transmission Structured Illumination Microscopy for Quantitative Phase and Scattering Imaging
Frontiers in Physics, 2021 In this paper, we demonstrate a digital micromirror device (DMD) based optical microscopic apparatus for quantitative differential phase contrast (qDIC) imaging, coherent structured illumination microscopy (SIM), and dual-modality (scattering/fluorescent)
Kai Wen +5 more
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New Interferometric Phase Unwrapping Method Based on Energy Minimization From Contextual Modeling
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 Two-dimensional phase unwrapping is a critical processing procedure of synthetic aperture radar interferometry. This operation becomes even more difficult in the presence of noise.
Ayoub Tlili +3 more
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