Results 61 to 70 of about 262,950 (171)
Topology optimization of broadband polarization conversion metasurfaces in microwave region
Results in EngineeringPolarization conversion metasurfaces are compact and efficient devices that manipulate the polarization state of electromagnetic waves, offering significant advantages in applications such as antennas, imaging systems, and optical communication ...
Honglin Zhong +7 more
doaj +1 more source
, 2019 Broadband-tunable sources of circularly-polarized light are crucial in fields such as laser science, biomedicine and spectroscopy. Conventional sources rely on nonlinear wavelength conversion and polarization control using standard optical components ...
Chen, Y. +4 more
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AIP Advances, 2017 In this paper, we propose a high-efficiency and wide-bandwidth linear polarization converter using double U-shaped metasurface. The design is based on the two dimensional artificial electromagnetic materials and micro-antenna array.
Zhong Lei Mei +3 more
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Electromechanically Tunable Metasurface Transmission Waveplate at Terahertz Frequencies
, 2017 Dynamic polarization control of light is essential for numerous applications ranging from enhanced imaging to materials characterization and identification.
Averitt, Richard D. +6 more
core +1 more source
Fiber-optic realization of anisotropic depolarizing quantum channels
, 2010 We employed an electrically-driven polarization controller to implement anisotropic depolarizing quantum channels for the polarization state of single photons.
Banaszek, Konrad +2 more
core +1 more source
On-Demand Dynamic Terahertz Polarization Manipulation Based on Pneumatically Actuated Metamaterial
Micromachines, 2023 In this paper, a new tuning strategy is proposed by incorporating a pneumatically actuated metamaterial to achieve on-demand polarization manipulation at THz frequencies.
Yongchao Zou +5 more
doaj +1 more source
Nanomaterials, 2020 We applied the harmonic oscillator model combined with the transfer matrix method to study the polarization conversion for transmitted waves in metallic grating/plasmon-excitation layer/metallic grating structure in the terahertz (THz) region.
Anqi Yu +8 more
doaj +1 more source
Bragg reflection waveguide as a source of wavelength-multiplexed polarization-entangled photon pairs
, 2012 We put forward a new highly efficient source of paired photons entangled in polarization with an ultra-large bandwidth. The photons are generated by means of a conveniently designed spontaneous parametric down-conversion process in a semiconductor type ...
Abolghasem +33 more
core +1 more source
Discovery of circularly polarised radio emission from SS 433 [PDF]
, 1999 We report the discovery of circularly polarised radio emission from the radio-jet X-ray binary SS 433 with the Australia Telescope Compact Array. The flux density spectrum of the circular polarization, clearly detected at four frequencies between 1 - 9 ...
Brinkmann W. +11 more
core +2 more sources
Polarization conversion with a photonic crystal slab
Journal of the European Optical Society-Rapid Publications, 2008 We show that a photonic crystal slab can enable efficient polarization conversion. Two mechanisms are identified. The first mechanism relies on the anisotropy of the bulk properties of the metamaterial and is mediated by interferences. The second mechanism is due to the resonant excitation of leaky surface waves at the interface of the photonic crystal.
Laroche, Marine +3 more
openaire +6 more sources