Digitalizing Self-Assembled Chiral Superstructures for Optical Vortex Processing.
Sign Up to like & getrecommendations! Published in 2018 at "Advanced materials"
DOI: 10.1002/adma.201705865
Abstract: Cholesteric liquid crystal (CLC) chiral superstructures exhibit unique features; that is, polychromatic and spin-determined phase modulation. Here, a concept for digitalized chiral superstructures is proposed, which further enables the arbitrary manipulation of reflective geometric phase… read more here.
Keywords: optical vortex; self assembled; assembled chiral; chiral superstructures ... 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
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
A Steady-State Approach for Studying Valley Relaxation Using an Optical Vortex Beam.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c00824
Abstract: Spin-valley coupling in monolayer transition-metal dichalcogenides gives rise to valley polarization and coherence effect, limited by intervalley scattering caused by exciton-phonon, exciton-impurity, and electron-hole exchange interactions (EHEIs). We explore an approach to tune the EHEI… read more here.
Keywords: exciton; state; optical vortex; valley relaxation ... See more keywords
Visualization of Optical Vortex Forces Acting on Au Nanoparticles Transported in Nanofluidic Channels
Sign Up to like & getrecommendations! Published in 2022 at "ACS Omega"
DOI: 10.1021/acsomega.1c04855
Abstract: The optical manipulation of nanoscale objects via structured light has attracted significant attention for its various applications, as well as for its fundamental physics. In such cases, the detailed behavior of nano-objects driven by optical… read more here.
Keywords: vortex forces; optical vortex; forces acting; acting nanoparticles ... See more keywords
3D Optical Vortex Trapping of Plasmonic Nanostructure
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-30948-y
Abstract: Abstract3D optical vortex trapping upon a polystyrene nanoparticle (NP) by a 1D gold dimer array is studied theoretically. The optical force field shows that the trapping mode can be contact or non-contact. For the former,… read more here.
Keywords: vortex; optical vortex; trapping plasmonic; plasmonic nanostructure ... 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
Reconstructing the topology of optical vortex lines with single-shot measurement
Sign Up to like & getrecommendations! Published in 2021 at "Applied Physics Letters"
DOI: 10.1063/5.0053812
Abstract: We propose and demonstrate a method for reconstructing the topology of optical vortex lines by utilizing digital holography. Compared with the traditional methods that need complicated spatial scanning procedure, the proposed method only requires a… read more here.
Keywords: vortex lines; reconstructing topology; vortex; optical vortex ... See more keywords
Femtosecond multiple filamentation of an optical vortex in the mid-IR wavelength range in fused silica and fluorides
Sign Up to like & getrecommendations! Published in 2022 at "Quantum Electronics"
DOI: 10.1070/qel18028
Abstract: The results of experimental and theoretical study of the self-action of femtosecond optical vortices in the region of anomalous group velocity dispersion in fused silica and fluorides are presented. Multiple filamentation of an axially asymmetric… read more here.
Keywords: optical vortex; multiple filamentation; silica fluorides; beam ... See more keywords
Broadband optical vortex generation from patterned cholesteric liquid crystals
Sign Up to like & getrecommendations! Published in 2017 at "Molecular Crystals and Liquid Crystals"
DOI: 10.1080/15421406.2017.1285095
Abstract: ABSTRACT Singular optics is an emerging field, in which an optical wave with a helical wavefront is handled for optical manipulation and nanofabrication. We present a method to generate optical vortices via reflection from cholesteric… read more here.
Keywords: crystals broadband; optical vortex; broadband optical; liquid crystals ... See more keywords
Optical vortex knots and links via holographic metasurfaces
Sign Up to like & getrecommendations! Published in 2020 at "Advances in Physics: X"
DOI: 10.1080/23746149.2020.1843535
Abstract: ABSTRACT Vortices arise in many natural phenomena as dark points of total destructive interference. Sometimes they form continuous lines and even enclosed loops with knotted or linked topologies in three spatial dimensions. Since the mathematical… read more here.
Keywords: optical vortex; holographic metasurfaces; physics; topology ... See more keywords