Optimal design of broadband linear-to-circular polarization conversion metasurface
Materials & DesignDue to their inherent defects, circular polarization discrimination methods involving amplitude-phase or axial ratio are obstacles of the computer software-based optimal design of broadband linear-to-circular (LTC) polarization conversion metasurfaces ...
Jiao Wang +4 more
doaj +3 more sources
The Polarized Emission of AGN at Millimeter Wavelengths as Seen by POLAMI
Galaxies, 2022 We review results from the POLAMI program, which monitors the polarization properties of 36 blazars at the IRAM 30 m telescope. We found that the variability of the degree of linear polarization is faster and of higher amplitude at 1 mm than at 3 mm and ...
Iván Agudo, Clemens Thum
doaj +1 more source
A Multi-Polarization Series-Fed Antenna Array Based on Eccentric Ring
IEEE Access, 2023 A multi-polarization series-fed antenna working at 10 GHz is presented in this paper. The patch elements are built by eccentric rings which can realize the performance of circular polarization.
Xin Guan +3 more
doaj +1 more source
Black hole magnetic fields and their imprint on circular polarization images [PDF]
, 2021 The circular polarization of black hole accretion flows can encode properties of the underlying magnetic field structure. Using general relativistic magnetohydrodynamics (GRMHD) simulations, we study the imprint of magnetic field geometry on circular ...
A. Ricarte, R. Qiu, R. Narayan
semanticscholar +1 more source
Characterization of output circular polarization degree in lowcost asymmetric metasurfaces [PDF]
EPJ Web of Conferences, 2022 Addition of asymmetry in plasmonic nanostructures can lead to chiro-optical phenomena, usually monitored as different absorption of left and right polarization, i.e. circular dichroism.
Petronijevic Emilija +8 more
doaj +1 more source
Chiral Dual-Core Photonic Crystal Fiber for an Efficient Circular Polarization Beam Splitter
Photonics, 2023 As a function of a circular polarization beam splitter (CPBS), combining a linear polarization beam splitter with a quarter-wave plate results in a polarization error in a circular polarization fiber-optic circuit.
She Li +5 more
doaj +1 more source
Photonic Bandgaps of One-Dimensional Photonic Crystals Containing Anisotropic Chiral Metamaterials
Photonics, 2022 Conventional photonic bandgaps (PBGs) for linear polarization waves strongly depend on the incident angle. Usually, PBGs will shift toward short wavelengths (i.e., blue-shifted gaps) as the incident angle increases, which limits their applications.
Qian Wei +8 more
doaj +1 more source
CIRCULAR POLARIZATION OBSERVED IN BIOLUMINESCENCE [PDF]
Nature, 1980 The left and right lanterns of live larvae of the fireflies Photuris lucicrescens and P. versicolor emitted circularly polarized light of opposite sense. A possible mechanism is discussed. [on SciFinder (R)]
Wynberg, H. +5 more
openaire +3 more sources
Multifunctional metasurface for broadband absorption, linear and circular polarization conversions
Optical Materials Express, 2021 With the development of metasurfaces and the improvement of manufacturing technology, it is important and imperative to design novel metasurfaces that can flexibly manipulate terahertz (THz) waves.
Zhaohua Li +5 more
semanticscholar +1 more source
Frontiers in Physics, 2021 Active control of terahertz (THz) wave polarization state is of great significance for sensitive detection, imaging and communication. Here, a tunable THz quarter wave plate is designed by electronically controlling a composite metasurface consisting of ...
Guocui Wang +4 more
doaj +1 more source