Results 71 to 80 of about 35,390 (284)
Generation of multiterawatt vortex laser beams [PDF]
Applied Optics, 2014 13 pages, 7 ...
Ament, Craig +5 more
openaire +3 more sources
Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source
Numerical Analysis and Verification of Off-Axis Double Vortex Beams
PhotonicsVortex beams are unique in that they have annular spatial profiles and carry orbital angular momentum. This has led to their use in applications including laser processing, microparticle manipulation and signal transmission.
Jianqiang Ye +5 more
doaj +1 more source
Electron vortex beams in a magnetic field: A new twist on Landau levels and Aharonov-Bohm states
, 2012 We examine the propagation of the recently-discovered electron vortex beams in a longitudinal magnetic field. We consider both the Aharonov-Bohm configuration with a single flux line and the Landau case of a uniform magnetic field.
A. Tonomura +6 more
core +3 more sources
Perfect vortex beam: Fourier transformation of a Bessel beam [PDF]
Optics Letters, 2015 We derive a mathematical description of a perfect vortex beam as the Fourier transformation of a Bessel beam. Building on this development, we experimentally generate Bessel-Gauss beams of different orders and Fourier transform them to form perfect vortex beams.
Vaity, Pravin, Rusch, Leslie
openaire +2 more sources
Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry
Advanced Functional Materials, EarlyView.In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite +5 more
wiley +1 more source
Ring-broken optical vortices with an adjustable opening
Results in Physics, 2019 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.
Shubo Cheng +8 more
doaj +1 more source
Magnetic Effects in the Paraxial Regime of Elastic Electron Scattering
, 2016 Based on a recent claim [Phys. Rev. Lett. 116, 127203 (2016)] that electron vortex can be used to image magnetism at the nanoscale in elastic scattering experiments, using transmission electron microscopy, a comprehensive computational study is performed
Edström, Alexander +2 more
core +1 more source
Reconstructing the Poynting vector skew angle and wave-front of optical vortex beams via two-channel moir\'e deflectometery [PDF]
, 2013 A novel approach based on the two-channel moir\'e deflectometry has been used to measure both wave-front and transverse component of the Poynting vector of an optical vortex beam. Generated vortex beam by the q-plate, an inhomogeneous liquid crystal cell,
Dashti, Mohsen +5 more
core +3 more sources
Soliton algebra by vortex-beam splitting
Optics Letters, 2001 We experimentally demonstrate the possibility of breaking up intense vortex light beams into stable and controllable sets of parametric solitons. We report observations performed in seeded second-harmonic generation, but the scheme can be extended to all parametric processes.
Minardi, Stefano +4 more
openaire +5 more sources