Results 11 to 20 of about 548,689 (195)

Singular value representation of the coherence Poincaré sphere

open access: yesJournal of the European Optical Society-Rapid Publications, 2022
The so-called coherence Poincaré sphere was recently introduced for geometrical visualization of the state of two-point spatial coherence of a random electromagnetic beam. The formalism and its interpretation strongly utilized a specific decomposition of
Laatikainen Jyrki   +3 more
doaj   +2 more sources

Poincaré Sphere and a Unified Picture of Wigner’s Little Groups

open access: yesEPJ Web of Conferences, 2014
It is noted that the Poincaré sphere for polarization optics contains the symmetries of the Lorentz group. The sphere is thus capable of describing the internal space-time symmetries dictated by Wigner’s little groups.
Kim Young Suh
doaj   +2 more sources

Higher-order Poincaré spheres and spatiospectral Poincaré beams

open access: yesPhysical Review Research
Light with a complex structure has become a powerful tool in many studies in classical and quantum optics. Here, we introduce a visual representation of light that is structured simultaneously in space, frequency, and polarization in the form of a higher-
R. Fickler, L. Kopf, M. Ornigotti
doaj   +2 more sources

Poincaré Rotator for Vortexed Photons

open access: yesFrontiers in Physics, 2021
A Poincaré sphere is a powerful prescription to describe a polarized state of coherent photons, oscillating along certain directions. The polarized state is described by a vector in the sphere, and various passive optical components, such as polarization
Shinichi Saito
doaj   +1 more source

Poincaré Homology Sphere

open access: yes, 2023
A Esfera Homológica de Poincaré, também conhecida como Espaço dodecaédrico de Poincaré, foi apresentada por Poincaré com o intuito de responder a questão levantada por ele próprio sobre a homologia ser uma ferramenta topológica que caracteriza a esfera ...
Barreto, Amanda Lopes
core   +1 more source

Poincaré sphere of electromagnetic spatial coherence

open access: yes, 2021
We introduce a Poincaré sphere construction for geometrical representation of the state of two-point spatial coherence in random electromagnetic (vectorial) beams.
Laatikainen, Jyrki   +7 more
core   +1 more source

Tailoring spatially unpolarized light on the Poincaré sphere: From equator states via meridian states to generalized great-circle states

open access: yesPhysical Review Research, 2021
In this paper we investigate the generation, manipulation and invariance properties of spatially unpolarized light in the context of classical optics. We generate spatially randomly polarized light by exploiting the optical activity of a so-called Cornu ...
Florian Kroh   +2 more
doaj   +1 more source

Primeres passes cap a la conjectura de Poincaré [PDF]

open access: yes, 2018
Treballs Finals de Grau de Matemàtiques, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2018, Director: Vicenç Navarro, Vicenç Aznar[en] The first Poincaré conjecture asserts that homology is sufficient to tell if a $n$-manifold is homeomorphic
Bustins Molina, Marta
core   +5 more sources

Arbitrarily polarized bound states in the continuum with twisted photonic crystal slabs

open access: yesLight: Science & Applications, 2023
Bilayer twisted photonic crystal slabs enable arbitrarily polarized bound states in continuum (BICs) covering full Poincare sphere.
Haoye Qin   +9 more
doaj   +1 more source

SU(2) symmetry of coherent photons and application to Poincaré rotator

open access: yesFrontiers in Physics, 2023
Lie algebra is a hidden mathematical structure behind various quantum systems realised in nature. Here, we consider SU(2) wavefunctions for polarisation states of coherent photons emitted from a laser source, and discuss the relationship to spin ...
Shinichi Saito
doaj   +1 more source

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