Results 41 to 50 of about 190,980 (288)

Measurement device-independent quantum key distribution with vector vortex modes under diverse weather conditions

open access: yesScientific Reports, 2023
Most quantum key distribution schemes exploiting orbital angular momentum-carrying optical beams are based on conventional set-ups, opening up the possibility of detector side-channel attacks.
Comfort Sekga, Mhlambululi Mafu
doaj   +1 more source

Beams with the transverse-only intensity at the focus

open access: yesКомпьютерная оптика
In this work, sharp focusing of vector beams with azimuthal polarization and beams with V-line of polarization uncertainty is simulated numerically using the Richards-Wolf formulas.
S.S. Stafeev, N.N. Kazakov, V.V. Kotlyar
doaj   +1 more source

Non-Paraxial Accelerating Beams

open access: yes, 2012
We present the spatially accelerating solutions of the Maxwell equations. Such non-paraxial beams accelerate in a circular trajectory, thus generalizing the concept of Airy beams.
Ido Kaminer   +4 more
core   +1 more source

Vector Beam Polarization State Spectrum Analyzer [PDF]

open access: yesScientific Reports, 2017
AbstractWe present a proof of concept for a vector beam polarization state spectrum analyzer based on the combination of a polarization diffraction grating (PDG) and an encoded harmonic q-plate grating (QPG). As a result, a two-dimensional polarization diffraction grating is formed that generates six different q-plate channels with topological charges ...
Ignacio Moreno   +5 more
openaire   +3 more sources

Generation and Characterization of Vector Beams with a Single SLM for Super-Resolution Microscopy [PDF]

open access: yesEPJ Web of Conferences
We present a method to generate vector beams using a single spatial light modulator (SLM) for depletion-based super-resolution microscopy techniques such as STED, RESOLFT, and subtraction microscopy.
Toledo-García Nick   +5 more
doaj   +1 more source

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

open access: yesFEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon   +6 more
wiley   +1 more source

Transmission of Orbital Angular Momentum and Cylindrical Vector Beams in a Large-Bandwidth Annular Core Photonic Crystal Fiber

open access: yesFibers, 2020
The stable propagation of orbital angular momentum and cylindrical vector beams in a newly designed annular core photonic crystal fiber (AC-PCF) tailored for the broadband single-radial order beam transmission (within the so-called “endlessly mono-radial”
Manish Sharma   +6 more
doaj   +1 more source

On polarization of vector light beams: origin of Berry phase

open access: yes, 2013
When generalized from plane waves to general vector beams, the notion of polarization described by the Stokes parameters turns out to be defined in a momentum-associated system that is fixed by the so-called Stratton vector.
Farrer, Emily   +5 more
core   +6 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Design of broadband terahertz vector and vortex beams: II. Holographic assessment

open access: yesLight: Advanced Manufacturing, 2022
In this paper, we demonstrate the capabilities of the terahertz pulse time-domain holography in visualisation, simulation, and assessment of broadband THz vortex beam formation dynamics upon its shaping by elements of beam converter, and further ...
Nikolay V. Petrov   +4 more
doaj   +1 more source

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