Results 61 to 70 of about 560,130 (293)

Joint Compressed Sensing and Manipulation of Wireless Emissions with Intelligent Surfaces

open access: yes, 2019
Programmable, intelligent surfaces can manipulate electromagnetic waves impinging upon them, producing arbitrarily shaped reflection, refraction and diffraction, to the benefit of wireless users. Moreover, in their recent form of HyperSurfaces, they have
Akyildiz, Ian   +10 more
core   +1 more source

Investigating Polarization-Sensitive Transmission and Reflection Metasurfaces for Advanced Wavefront Manipulation

open access: yesApplied Sciences, 2023
This paper presents the design and optimization of a dual-band polarization-dependent metasurface capable of dynamically switching transmission and reflection characteristics.
Ashfaq Ahmad, Jawad Ali, Dong-You Choi
doaj   +1 more source

Programmable two-photon quantum interference in $10^3$ channels in opaque scattering media [PDF]

open access: yes, 2015
We investigate two-photon quantum interference in an opaque scattering medium that intrinsically supports $10^6$ transmission channels. By adaptive spatial phase-modulation of the incident wavefronts, the photons are directed at targeted speckle spots or
Boller, Klaus -J.   +5 more
core   +4 more sources

Taming the degeneration of Bessel beams at anisotropic-isotropic interface: toward 3D control of confined vortical waves

open access: yes, 2015
Despite their self-reconstruction properties in heterogeneous media, Bessel beams are known to degenerate when they are refracted from an isotropic to an anisotropic medium.
Baudoin, Michael   +3 more
core   +2 more sources

Roadmap on structured light [PDF]

open access: yes, 2017
Structured light refers to the generation and application of custom light fields. As the tools and technology to create and detect structured light have evolved, steadily the applications have begun to emerge.
Belmonte Molina, Aniceto   +5 more
core   +2 more sources

A Gaussian reflective metasurface for advanced wavefront manipulation

open access: yesOptics Express, 2019
Metasurfaces enable us to control the fundamental properties of light with unprecedented flexibility. However, most metasurfaces realized to date aim at modifying plane waves. While the manipulation of nonplanar wavefronts is encountered in a diverse number of applications, their control using metasurfaces is still in its infancy.
Jade Martínez-Llinàs   +5 more
openaire   +2 more sources

Reconfigurable Transmission‐Reflection‐Integrated Coding Metasurface for Full‐Space Electromagnetic Wavefront Manipulation

open access: yesAdvanced Optical Materials, 2023
Reconfigurable metasurfaces exhibit the capability of flexibly controlling electromagnetic (EM) waves, and the real‐time manipulation of tailored EM wavefront in full‐space is one of the steadily increasing interests. This paper proposes a reconfigurable
Tao Yin   +5 more
semanticscholar   +1 more source

Broadband Spin-Selective Wavefront Manipulations with Generalized Pancharatnam–Berry Phase Metasurface

open access: yesPhotonics
Metasurfaces can flexibly manipulate electromagnetic waves by engineering subwavelength structures, which have attracted enormous attention in holography, cloaking, and functional multiplexing. For structures with n-fold (n > 2) rotational symmetry, they
Shiming Gan   +8 more
doaj   +1 more source

Plasma q-plate for generation and manipulation of intense optical vortices

open access: yes, 2017
An optical vortex is a light wave with a twisting wavefront around its propagation axis and null intensity in the beam center. Its unique spatial structure of field lends itself to a broad range of applications, including optical communication, quantum ...
Fisch, Nathaniel J.   +2 more
core   +1 more source

Berry phase of light Bragg-reflected by chiral liquid crystal media [PDF]

open access: yes, 2016
Berry phase is revealed for circularly polarized light when it is Bragg-reflected by a chiral liquid crystal medium of the same handedness. By using a chiral nematic layer we demonstrate that if the input plane of the layer is rotated with respect to a ...
Barboza, Raouf   +3 more
core   +2 more sources

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