Multichannel Superposition of Grafted Perfect Vortex Beams
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202203044
Abstract: Inspired by plant grafting, grafted vortex beams can be formed through grafting two or more helical phase profiles of optical vortex beams. Recently, grafted perfect vortex beams (GPVBs) have attracted much attention due to their… read more here.
Keywords: grafted perfect; optics; perfect vortex; metasurface ... See more keywords
Combination of high order polarization vortex beams using Hermite–Gauss beams
Sign Up to like & getrecommendations! Published in 2018 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-018-1446-8
Abstract: A method to combine arbitrary order polarization vortex beams (PVBs) by Hermite–Gauss mode beams with designed field distributions is proposed. The orders of PVBs are determined by the modes of HG beams which are used… read more here.
Keywords: order polarization; polarization vortex; vortex beams; hermite gauss ... See more keywords
Femtosecond laser surface structuring of silicon with Gaussian and optical vortex beams
Sign Up to like & getrecommendations! Published in 2017 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2016.10.162
Abstract: Abstract We report an experimental analysis of femtosecond laser induced surface structuring of silicon by exploiting both Gaussian and Optical Vortex beams. In particular, we show how different surface patterns, consisting of quasi-periodic ripples and… read more here.
Keywords: laser; optical vortex; surface; vortex beams ... See more keywords
Topological defects related to linear dichroism. Generation of vector-vortex beams
Sign Up to like & getrecommendations! Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.166335
Abstract: Abstract We show that the effect of linear dichroism produces vector-vortex beams in axially inhomogeneous optically birefringent material samples. When the linear dichroism dominates (the corresponding parameter σ = 0), a vector-vortex beam is generated at the… read more here.
Keywords: topological defects; dichroism; vortex beams; vector vortex ... See more keywords
Stabilization of vector vortex beams in thermal nonlinear media
Sign Up to like & getrecommendations! Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.166686
Abstract: Abstract We studied the stability dynamics of vector vortices – which consist of a fundamental Gaussian beam co-propagating with a higher-order vortex – in a thermal, nonlocal, nonlinear medium with cylindrical symmetry. Using linear stability… read more here.
Keywords: stabilization vector; vortex beams; vector vortex; thermal nonlinear ... See more keywords
Common-path generation of stable cylindrical perfect vector vortex beams of arbitrary order
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.125807
Abstract: A Highly flexible and efficient method of generating stable radially and Azimuthally polarized perfect optical vortex beams and all higher-order cylindrical vector vortex beams are proposed and demonstrated. The method is the most convenient implementation… read more here.
Keywords: order; phase; beams arbitrary; vortex beams ... See more keywords
Phase fluctuations in vortex beams
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.126189
Abstract: Abstract Phase fluctuations of vortex beams are examined using the random phase screen setup. By taking Gaussian, Bessel Gaussian and Laguerre Gaussian vortex beams, with the main focus being on Gaussian vortex beam, we investigate… read more here.
Keywords: phase fluctuations; phase; beams phase; vortex beams ... See more keywords
604-nm high-order vortex beams directly generated from a Pr:YLF laser with a cavity-loss-induced gain switching mechanism
Sign Up to like & getrecommendations! Published in 2020 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2020.106185
Abstract: Abstract In this work, we demonstrated, for the first time to the best of our knowledge, high-order vortex beams at 604 nm that were directly emitted from a Pr:YLF crystal laser. By combining a blue-diode-pumped v-type… read more here.
Keywords: cavity loss; order; cavity; high order ... See more keywords
Ring-broken optical vortices with an adjustable opening
Sign Up to like & getrecommendations! Published in 2019 at "Results in physics"
DOI: 10.1016/j.rinp.2019.102689
Abstract: Abstract A modified helical phase is presented in this paper. The generated vortex beams with the modified helical phases are characterized with ring-broken intensity distributions. The transverse intensity patterns of the generated vortex beams at… read more here.
Keywords: adjustable opening; ring broken; optical vortices; vortex beams ... See more keywords
Axial acoustic radiation force on rigid oblate and prolate spheroids in Bessel vortex beams of progressive, standing and quasi‐standing waves
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2016.09.022
Abstract: HighlightsThe partial‐wave series expansion method is used to derive the force on spheroids.Oblate and prolate spheroids centered on Bessel vortex beams are considered.The Neumann boundary condition is applied to compute the scattering coefficients.Single tractor beam… read more here.
Keywords: force; bessel vortex; radiation force; vortex beams ... See more keywords
Interactions between Plasmonic Nanoantennas and Vortex Beams.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c01926
Abstract: The orbital angular momentum (OAM) of light offers a new degree of freedom for light-matter interactions, yet how to control such interactions with this physical dimension remains open. Here, by developing a numerical method enabling… read more here.
Keywords: plasmonic nanoantennas; oam; interactions plasmonic; nanoantennas vortex ... See more keywords