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Dynamic control of hybrid grafted perfect vector vortex beams [PDF]

open access: yesNature Communications, 2023
Perfect vector vortex beams (PVVBs) have attracted considerable interest due to their peculiar optical features. PVVBs are typically generated through the superposition of perfect vortex beams, which suffer from the limited number of topological charges (
Hammad Ahmed   +5 more
doaj   +2 more sources

Measuring high-efficiency perfect composite vortex beams with reflective metasurfaces in microwave band [PDF]

open access: yesNanophotonics
Optical vortex beams carrying orbit angular momentum have attracted significant attention recently. Perfect vortex beams, characterized by their topological charge-independent intensity profile, have important applications in enhancing communication ...
Hong Jing   +8 more
doaj   +2 more sources

Theoretical Study on Generation of Multidimensional Focused and Vector Vortex Beams via All-Dielectric Spin-Multiplexed Metasurface [PDF]

open access: yesNanomaterials, 2022
The optical vortex (OV) beams characterized by orbital angular momentum (OAM) possess ubiquitous applications in optical communication and nanoparticle manipulation.
Yue Liu   +8 more
doaj   +2 more sources

Phase memory of optical vortex beams [PDF]

open access: yesScientific Reports, 2022
Optical vortex beams are under considerable scrutiny due to their demonstrated potential for applications ranging from quantum optics to optical communications and from material processing to particle trapping.
Mahdi Eshaghi   +4 more
doaj   +2 more sources

Generating Different Polarized Multiple Vortex Beams at Different Frequencies from Laminated Meta-Surface Lenses [PDF]

open access: yesMicromachines, 2021
We demonstrate the generation of multiple orbital angular momentum (OAM) vortex beams with different radiating states at different frequencies through a laminated meta-surface lens consisting of a dual polarized meta-array interconnected with a frequency
Pengfei Gao, Rui Yang
doaj   +2 more sources

Quarter-Wave Plate Metasurfaces for Generating Multi-Channel Vortex Beams [PDF]

open access: yesNanomaterials
Metasurfaces of quarter-wave plate (QWP) meta-atoms have exhibited high flexibility and versatile functionalities in the manipulation of light fields. However, the generation of multi-channel vortex beams with the QWP meta-atom metasurfaces presents a ...
Ziheng Zhang   +9 more
doaj   +2 more sources

Vortex beam array generated by a volume compound fork grating in lithium niobite

open access: yesResults in Physics, 2021
Here, we report a generation of vortex beam array based on a micro volume compound fork grating fabricated by a femtosecond laser direct writing technique in lithium niobite crystal.
Yu Zhuang   +5 more
doaj   +1 more source

Advances on Solid-State Vortex Laser

open access: yesPhotonics, 2022
Vortex beams (VBs) are structured beams with helical wavefronts carrying orbital angular momentum (OAM) and they have been widely used in lots of domains, such as optical data-transmission, optical tweezer, quantum entanglement, and super-resolution ...
Zhichao Zhang   +3 more
doaj   +1 more source

Full-Space Wavefront Shaping of Broadband Vortex Beam with Switchable Terahertz Metasurface Based on Vanadium Dioxide

open access: yesNanomaterials, 2023
Currently, vortex beams are extensively utilized in the information transmission and storage of communication systems due to their additional degree of freedom. However, traditional terahertz metasurfaces only focus on the generation of narrowband vortex
Xueying Li   +4 more
doaj   +1 more source

Experimental study of the transport characteristics of fractional-order vortex beams in a turbulent atmosphere simulator

open access: yesAIP Advances, 2023
Fractional vortex beams have attracted increasing attention due to their complex yet intriguing physical properties, such as radial notch intensity distribution and higher degrees of modulation in orbital angular momentum.
Xiang Xu   +5 more
doaj   +1 more source

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