Results 21 to 30 of about 61,868 (235)

A Riccati equation approach to construct new dispersive solitons to the Kaup-Newell equation [PDF]

open access: yesMemoirs of the Scientific Sections of the Romanian Academy, 2020
The present paper examines analytically the Kaup-Newell equation, an important class of nonlinear Schrodinger equations with lots of applications in optical fibers. The Riccati equation approach is employed for the present study. The method is one of the
A. A. AL QARNI
doaj  

Rotationally induced vortices in optical cavity modes [PDF]

open access: yes, 2009
We show that vortices appear in the modes of an astigmatic optical cavity when it is put into rotation about its optical axis. We study the properties of these vortices and discuss numerical results for a specific realization of such a set-up. Our method
Abramochkin E G   +9 more
core   +1 more source

Rotating vortex imaging implemented by a quantized spiral phase modulation [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
We demonstrate both theoretically and experimentally that a spiral mask with a finite number of discrete phase levels allows a defocusing induced rotation of the point spread function in the vortex imaging.
Baránek M., Bouchal Z.
doaj   +1 more source

Hybridization of singular plasmons via transformation optics [PDF]

open access: yesProceedings of the National Academy of Sciences, 2019
Significance Surface plasmons, which are optical resonances supported by metallic nanostructures, are extremely useful for manipulating light on the nanoscale. However, designing novel plasmonic devices becomes quite challenging when the desired spectral response pattern is highly complex.
Sanghyeon Yu, Habib Ammari
openaire   +3 more sources

Vanishing tilt-to-length coupling for a singular case in two-beam laser interferometers with Gaussian beams [PDF]

open access: yes, 2015
The omnipresent tilt-to-length coupling in two-beam laser interferometers, frequently a nuisance in precision measurements, vanishes for the singular case of two beams with identical parameters and complete detection of both beams without clipping.
Heinzel, Gerhard   +3 more
core   +3 more sources

Scattering of the Radial Polarized Beams on the Metal Spherical Particle: Plasmonic Nanojet Formation

open access: yesFrontiers in Physics, 2021
We report on the effects associated with photonic nanojet (PNJ) formation under illumination of a metallic spherical particle with a focused light beam with polarization singularity.
D. O. Plutenko, M. V. Vasnetsov
doaj   +1 more source

Exploiting the Time-Reversal Operator for Adaptive Optics, Selective Focusing and Scattering Pattern Analysis [PDF]

open access: yes, 2011
We report on the experimental measurement of the backscattering matrix of a weakly scattering medium in optics, composed of a few dispersed gold nanobeads.
Aubry, Alexandre   +5 more
core   +3 more sources

Compound Vector Light Generator Based on a Metasurface

open access: yesPhotonics, 2021
In view of wide applications of vector light with a non-uniform polarization state, a compound vector light generator is proposed to generate compound vector light. One compound vector light contains two or more non-uniform polarization modes and several
Changda Zhou   +3 more
doaj   +1 more source

Identification of nonlinearity in conductivity equation via Dirichlet-to-Neumann map

open access: yes, 2002
We prove that the linear term and quadratic nonlinear term entering a nonlinear elliptic equation of divergence type can be uniquely identified by the Dirichlet to Neuman map.
Adams R A   +13 more
core   +1 more source

Creating and Controlling Polarization Singularities in Plasmonic Fields

open access: yesPhotonics, 2015
Nanoscale light fields near nanoplasmonic objects can be highly structured and can contain highly-subwavelength features. Here, we present the results of our search for the simplest plasmonic system that contains, and can be used to control, the smallest
Anouk de Hoogh   +3 more
doaj   +1 more source

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