Results 11 to 20 of about 262,950 (171)

Complete asymmetric polarization conversion at zero-eigenvalue exceptional points of non-Hermitian metasurfaces [PDF]

open access: yesNanophotonics
Non-Hermitian systems can be tuned to exhibit exceptional points, where both eigenvalues and eigenstates coalesce concurrently. The inherent adaptability of photonic non-Hermitian systems in configuring gain and loss has allowed us to observe a plethora ...
Oh Donghak   +7 more
doaj   +2 more sources

A 1-Bit Coding Metasurface With Polarization Conversion in X-Band

open access: yesFrontiers in Materials, 2022
Polarization conversion metasurfaces are widely used in optical devices, microwave devices and communication systems, owing to their unique polarization modulation characteristics.
Wen Hua Gao   +3 more
doaj   +1 more source

Polarization conversion cube-corner retroreflector [PDF]

open access: yesApplied Optics, 2010
Polarization conversion cube-corner retroreflectors rotate the major axis of the incident electric field by 90°. We show that polarization conversion cube-corner retroreflectors cannot be created with isotropic reflecting surfaces, but can be created by incorporating nonisotropic reflecting surfaces.
Karlton, Crabtree, Russell, Chipman
openaire   +2 more sources

Polarization conversion when focusing cylindrically polarized vortex beams [PDF]

open access: yesScientific Reports, 2016
AbstractCurrently, cylindrical beams with radial or azimuthal polarization are being used successfully for the optical manipulation of micro- and nano-particles as well as in microscopy, lithography, nonlinear optics, materials processing, and telecommunication applications.
Alexey P. Porfirev   +2 more
openaire   +3 more sources

Multi-Band High-Efficiency Multi-Functional Polarization Controller Based on Terahertz Metasurface

open access: yesNanomaterials, 2022
Electromagnetic metasurfaces with excellent electromagnetic wave regulation properties are promising for designing high-performance polarization control devices, while the application prospect of electromagnetic metasurfaces is limited because of the ...
Huaijun Chen   +6 more
doaj   +1 more source

Simple design of efficient broadband multifunctional polarization converter for X-band applications

open access: yesScientific Reports, 2021
A simple design of a broadband multifunctional polarization converter using an anisotropic metasurface for X-band application is proposed. The proposed polarization converter consists of a periodic array of the two-corner-cut square patch resonators ...
Thi Kim Thu Nguyen   +9 more
doaj   +1 more source

Dynamic phase assembled terahertz metalens for reversible conversion between linear polarization and arbitrary circular polarization

open access: yesOpto-Electronic Advances, 2022
If a metalens integrates the circular polarization (CP) conversion function, the focusing lens together with circular-polarizing lens (CPL) in traditional cameras may be replaced by a metalens.
Jitao Li   +8 more
doaj   +1 more source

Terahertz broadband polarization converter based on the double-split ring resonator metasurface

open access: yesSN Applied Sciences, 2021
A terahertz broadband polarization converter based on the metasurface of a double-split ring resonator is proposed. The structural parameters of this device have been optimized in numerical simulations. The results show that in the frequency range from 0.
Zhenhua Xu   +4 more
doaj   +1 more source

High-temperature metasurface for polarization conversion and RCS reduction

open access: yesFrontiers in Physics, 2022
In this study, we present a high temperature-resistant linear-to-linear polarization conversion metasurface for wideband RCS reduction in the microwave regime.
Wenjie Wang   +9 more
doaj   +1 more source

Temperature-controlled terahertz polarization conversion bandwidth

open access: yesOptics Express, 2021
Active control of metasurfaces has attracted widespread attention because of the adjustable electromagnetic properties obtained. Here we designed and experimentally studied a dynamically controllable polarization converter in the terahertz band. By designing the structural parameters and utilizing the insulator-to-metal phase transition of vanadium ...
Jing Zhao   +12 more
openaire   +2 more sources

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