Results 31 to 40 of about 71,495 (286)
Divergence of optical vortex beams [PDF]
Applied Optics, 2015 4 pages, 4 ...
Reddy, Salla Gangi +5 more
openaire +3 more sources
Optical spin-dependent beam separation in cyclic group symmetric metasurface
Nanophotonics, 2020 Cross-polarization scattering of a circularly polarized beam from nano-rod introduces a geometric phase to the outgoing beam with opposite circular polarization.
Lee Yeon Ui +5 more
doaj +1 more source
Multichannel terahertz quasi-perfect vortex beams generation enabled by multifunctional metasurfaces
Nanophotonics, 2022 Vortex beams carrying orbital angular momentum (OAM) open a new perspective in various terahertz research. Multichannel and divergence controllable terahertz vortex beam generation holds the key to promoting the development of OAM related terahertz ...
Liu Wanying +7 more
doaj +1 more source
Integrated optical vortex beam receivers [PDF]
Optics Express, 2016 A simple and ultra-compact integrated optical vortex beam receiver device is presented. The device is based on the coupling between the optical vortex modes and whispering gallery modes in a micro-ring resonator via embedded angular gratings, which provides the selective reception of optical vortex modes with definitive total angular momentum ...
Cicek, Kenan +11 more
openaire +6 more sources
Airy Transform of the New Power-Exponent-Phase Vortex Beam
Photonics, 2023 A new power-exponent-phase vortex beam with nonlinear phase winding has shown flexible control freedom compared with conventional vortex beams. In order to further enrich the modulation freedom and expand the ability of self-healing to meet current ...
Qidong Lin +6 more
doaj +1 more source
Deterministic creation, pinning, and manipulation of quantized vortices in a Bose-Einstein condensate [PDF]
, 2015 We experimentally and numerically demonstrate deterministic creation and manipulation of a pair of oppositely charged singly quantized vortices in a highly oblate Bose-Einstein condensate (BEC).
Anderson, B. P. +3 more
core +2 more sources
Research on Blind Area Suppression Technology for Vortex Beam Detection [PDF]
Hangkong bingqiTo address the problem of far-target detection blind areas caused by the dark hollow regions in the propagation direction of vortex beams， a method based on the coherent synthesis of vortex superposition using a ring-beam array is proposed.
Peng Zhiyong, Tu Yan, Zhang Ninghua, Zhou Shuping, Zhao Zidan, Xie Guanghui
doaj +1 more source
IEEE Access, 2020 In this paper, we propose a method to generate a high-order Bessel orbital angular momentum (OAM) vortex beam by using a single-layer reflective metasurface, which integrates the advantages of small size, high efficiency, insensitive polarization and ...
Haixia Liu +4 more
doaj +1 more source
Terahertz circular Airy vortex beams [PDF]
Scientific Reports, 2017 AbstractVortex beams have received considerable research interests both in optical and millimeter-wave domain since its potential to be utilized in the wireless communications and novel imaging systems. Many well-known optical beams have been demonstrated to carry orbital angular momentum (OAM), such as Laguerre-Gaussian beams and high-order Bessel ...
Changming Liu +5 more
openaire +3 more sources
Manipulation of Energy Flow with X-Type Vortex
Photonics, 2022 In this study, a new method for manipulating energy flow in a 3D vector field is proposed. In this method, an azimuthally-polarized beam with a noncanonical vortex, the X-type vortex, is focused in a high-numerical aperture system.
Han Zhang +3 more
doaj +1 more source