Results 21 to 30 of about 1,358,362 (273)

An interference scheme for generating inhomogeneously polarized laser radiation using a spatial light modulator [PDF]

open access: yesКомпьютерная оптика, 2020
An optical system for converting linearly polarized laser beams into cylindrical vector beams is developed and experimentally investigated. The scheme is based on the coherent addition of mode beams using a Mach-Zehnder interferometer. The simplicity and
Sergei Karpeev   +2 more
doaj   +1 more source

Spin-Hall Effect of Cylindrical Vector Vortex Beams

open access: yesPhotonics, 2023
Spin-Hall effect (SHE) of light is one of the main manifestations of the spin-orbit interaction of photons, and has been extensively studied for optical beams with homogeneous polarization.
Xuyao Zhang   +4 more
doaj   +1 more source

Effect of the azimuthal gradient of the thermal load on the depolarization of cylindrical vector beams propagating in a side non-uniformly pumped isotropic medium

open access: yesResults in Physics, 2019
The theoretical and experimental investigations of the depolarization of cylindrical vector beams when they propagate into a side non-uniformly pumped isotropic laser medium.
Ce Yang   +4 more
doaj   +1 more source

Selective excitation of plasmon resonances with single V-point cylindrical vector beams [PDF]

open access: yes, 2021
We use a rigorous group theoretical method to identify a class of cylindrical vector beams that can selectively excite the plasmon modes of axially symmetric plasmonic structures.
Siemens, Mark E   +5 more
core   +1 more source

Generation of Perfect Cylindrical Vector Beams With Complete Control Over the Ring Width and Ring Diameter

open access: yesIEEE Photonics Journal, 2018
We propose the generation of high-purity perfect cylindrical vector beams (PCVB) using the Fourier transformation of Bessel–Gauss vector beams.
Prabin Pradhan, Manish Sharma, Bora Ung
doaj   +1 more source

Spin angular momentum and angular harmonics spectrum of two-order polarization vortices at the tight focus

open access: yesКомпьютерная оптика, 2023
We investigate the spin angular momentum (SAM) of two-order cylindrical vector beams at the tight focus. Such beams are a generalization of the conventional cylindrical vector beams since the transverse field components on the Cartesian axes have ...
A.A. Kovalev, V.V. Kotlyar
doaj   +1 more source

Reconfigurable beams with arbitrary polarization and shape distributions at a given plane [PDF]

open access: yes, 2013
Methods for generating beams with arbitrary polarization based on the use of liquid crystal displays have recently attracted interest from a wide range of sources.
Carnicer González, Arturo   +3 more
core   +1 more source

Switchable phase and polarization singular beams generation using dielectric metasurfaces

open access: yesScientific Reports, 2017
Singular beams which possess helical phase wavefront or spatially inhomogeneous polarization provide new freedom for optical field manipulation. However, conventional schemes to produce the singular beams have difficulty in realizing the flexible switch ...
Yanliang He   +7 more
doaj   +1 more source

Mid-infrared cylindrical vector beams enabled by dielectric metasurfaces

open access: yesAPL Materials, 2021
Over the last decade, photonics in the mid-infrared (mid-IR) frequency range had major advances in both generation and detection of light. However, efficient manipulation of the mid-IR light still faces many challenges.
Anastasia Zalogina   +5 more
doaj   +1 more source

Mode-Specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams [PDF]

open access: yes
Nanocavities formed by ultrathin metallic gaps permitthe reproducibleengineering and enhancement of light-matter interaction, withmode volumes reaching the smallest values allowed by quantum mechanics.While the enhanced vacuum field in metallic nanogaps ...
Vento, Valeria   +3 more
core   +3 more sources

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