Multifunctional Vortex Beam Generation by a Dynamic Reflective Metasurface
Sign Up to like & getrecommendations! Published in 2020 at "Advanced Optical Materials"
DOI: 10.1002/adom.202001689
Abstract: In recent decades, metasurfaces have attracted considerable interest to generate vortex beams, that is, orbital angular momentum (OAM) carrying beams. However, the existing OAM metasurfaces are mostly fixed‐mode or with single function. Here a concept… read more here.
Keywords: metasurface; beam generation; vortex beam; beam ... See more keywords
Nonparaxial properties of partially coherent Lorentz-Gauss vortex beam propagating in free space
Sign Up to like & getrecommendations! Published in 2018 at "Optik"
DOI: 10.1016/j.ijleo.2018.03.113
Abstract: Abstract The analytical formulae of nonparaxial propagation, paraxial propagation and far field propagation for the partially coherent Lorentz-Gauss vortex beam have been derived, the propagation properties of nonparaxial, paraxial and far field propagation are analyzed… read more here.
Keywords: propagation; vortex beam; lorentz gauss; gauss vortex ... See more keywords
Controlled spin of a nonbirefringent droplet trapped in an optical vortex beam
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.06.021
Abstract: Abstract The spin part of the angular momentum of light can cause a birefringent particle to spin around its axis, while having no effect on a nonbirefringent particle. The orbital part of light’s angular momentum,… read more here.
Keywords: optical vortex; vortex beam; trapped optical; particle ... See more keywords
High-performance broadband vortex beam generator using reflective Pancharatnam–Berry metasurface
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.06.041
Abstract: Abstract Vortex beam generators, especially for broadband working ones, are essential in recent communication systems, since it is believed to be a key to improve the channel capacity efficiently. However, available vortex beam generators surfer… read more here.
Keywords: reflective pancharatnam; vortex; vortex beam; metasurface ... See more keywords
Influence of biological tissue and spatial correlation on spectral changes of Gaussian-Schell model vortex beam
Sign Up to like & getrecommendations! Published in 2020 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2020.106224
Abstract: Abstract Based on the extended Huygens-Fresnel principle, the analytical expressions of the spectrum for Gaussian-Schell model vortex beam (GSMVB) propagating in biological tissues have been derived. The effects of the field point position, the species… read more here.
Keywords: jump; model vortex; vortex beam; gaussian schell ... See more keywords
Compensation for the orbital angular momentum of a vortex beam in turbulent atmosphere by adaptive optics
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2017.07.028
Abstract: Abstract A method which can be used to compensate for a distorted orbital angular momentum and wavefront of a beam in atmospheric turbulence, simultaneously, has been proposed. To confirm the validity of the method, an… read more here.
Keywords: angular momentum; vortex beam; optics; orbital angular ... See more keywords
Vortex beam manipulation through a tunable plasma-ferrite metamaterial
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-95693-1
Abstract: This paper is devoted to the study of vortex beam transmission from an adjustable magnetized plasma-ferrite structure with negative refraction index. We use the angular spectral expansion technique together with the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts}… read more here.
Keywords: usepackage; vortex beam; plasma ferrite; beam manipulation ... See more keywords
Unconventional generation of optical vortex beam using axicon pair and a birefringent lens: Validation of plasmonic excitation
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.4982875
Abstract: We generate a nondiffracted Bessel beam using an axicon. A simple setup is presented to generate a zero order Bessel beam. Moreover, we introduce certain modifications in this optical setup for unconventional generation of an… read more here.
Keywords: using axicon; optical vortex; vortex beam; beam using ... See more keywords
Direct emission of chirality controllable femtosecond LG01 vortex beam
Sign Up to like & getrecommendations! Published in 2018 at "Applied Physics Letters"
DOI: 10.1063/1.5028477
Abstract: Direct emission of a chirality controllable ultrafast LG01 mode vortex optical beam from a conventional z-type cavity design SESAM (SEmiconductor Saturable Absorber Mirror) mode locked LD pumped Yb:Phosphate laser has been demonstrated. A clean 360… read more here.
Keywords: mode; emission chirality; direct emission; vortex beam ... See more keywords
Superlong uniform light tunnel created by focusing radially polarized vortex beam
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5033926
Abstract: A method of generating a super-long micro-scale light tunnel with longitudinal intensity variation less than three percent of the maximum is presented. A radially polarized vortex beam with topological charge of two can be focused… read more here.
Keywords: radially polarized; vortex beam; light; polarized vortex ... See more keywords
Broadband efficient vortex beam generation with metallic helix array
Sign Up to like & getrecommendations! Published in 2018 at "Applied Physics Letters"
DOI: 10.1063/1.5039804
Abstract: Vortex beams with orbital angular momentum are characterized by a helical phase front and a phase singularity at the beam center. Such beams have various intriguing applications, such as optical communications, particle trapping, and high… read more here.
Keywords: phase; vortex beam; broadband efficient; beam generation ... See more keywords