Broadband acoustic vortex beam generator based on coupled resonances
Sign Up to like & getrecommendations! Published in 2021 at "Applied Physics Letters"
DOI: 10.1063/5.0045397
Abstract: A high-performance acoustic vortex beam generator (VBG) based on artificial micro-structured metamaterials is of great significance in acoustic communication. However, to date, the research on metamaterial VBGs mainly focused on their single frequency properties in… read more here.
Keywords: beam generator; acoustic vortex; vortex beam;
High-efficiency transparent vortex beam generator based on ultrathin Pancharatnam-Berry metasurfaces.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.001816
Abstract: Vortex beam generators are promising to improve the transmission data rate and enlarge the communication capacity due to the fact that they inherently carry the orbital angular momentum (OAM). However, current available devices are limited… read more here.
Keywords: vortex beam; pancharatnam berry; beam generator; beam ... See more keywords
Terahertz vortex beam generator based on bound states in the continuum.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.431814
Abstract: Vortex beams are playing an increasingly crucial role in wireless optical communications. Traditional vortex beam generators based on spiral phase plates and metasurfaces have a geometric center in real space, which limit their convenience in… read more here.
Keywords: vortex beams; beam generator; vortex beam; terahertz vortex ... See more keywords