Results 11 to 20 of about 233,077 (337)

Geometric phase for twisted light [PDF]

open access: greenOptics Express, 2023
Polarization vectors of light traveling in a coiled optical fiber rotate around its propagating axis even in the absence of birefringence. This rotation was usually explained due to the Pancharatnam-Berry phase of spin-1 photons. Here, we use a purely geometric method to understand this rotation.
Liping Yang
openaire   +4 more sources

Correlated insulating phases in the twisted bilayer graphene* [PDF]

open access: greenChinese Physics B, 2021
We review analytical and numerical studies of correlated insulating states in twisted bilayer graphene, focusing on real-space lattice models constructions and their unbiased quantum many-body solutions. We show that by constructing localized Wannier states for the narrow bands, the projected Coulomb interactions can be approximated by interactions of ...
Da Liao, Yuan   +3 more
openaire   +4 more sources

Statistical Properties of a Twisted Gaussian Schell-Model Beam Carrying the Cross Phase in a Turbulent Atmosphere [PDF]

open access: goldPhotonics
In this letter, we conducted a detailed investigation of the statistical properties, such as spectral density, spectral degree of coherence (SDOC), orbital angular momentum (OAM) flux density, and propagation factor M2, of a twisted Gaussian Schell-model
Wenshuo Hou   +4 more
doaj   +2 more sources

Twist Phase Matching in Two-Dimensional Materials [PDF]

open access: greenPhysical Review Letters, 2023
Optical phase matching involves establishing a proper phase relationship between the fundamental excitation and generated waves to enable efficient optical parametric processes. It is typically achieved through birefringence or periodic polarization. Here, we report that the interlayer twist angle in two-dimensional (2D) materials creates a nonlinear ...
Hong, Hao   +10 more
openaire   +5 more sources

Phase Transition between the Cholesteric and Twist Grain Boundary C Phases [PDF]

open access: green, 1997
The upper critical temperature Tc2 for the phase transition between the Cholesteric phase (N*) and the Twist Grain Boundary C phase with the layer inclination tilted to the pitch axis (TGBct) in thermotropic liquid crystals is determined by the mean ...
A. Anakkar   +23 more
core   +2 more sources

Twisted classical phase space [PDF]

open access: yesCzechoslovak Journal of Physics, 1998
6 pages, LaTeX; presented by A. Nowicki at the VII-th Colloquium "Quantum Groups and Integrable Systems", Prague 1998, to be published in Czech.
Czerhoniak, P., Nowicki, A.
openaire   +3 more sources

Аngular optical characteristics of a standard twist indicator with a phase compensator [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Физика, 2022
Background and Objectives: One of the disadvantages of a liquid crystal display device for information on the twist effect is its relatively narrow viewing angle.
Simonenko, Georgy Valentinovich
doaj   +1 more source

Are circadian amplitudes and periods correlated? A new twist in the story [version 1; peer review: 2 approved]

open access: yesF1000Research, 2023
Three parameters are important to characterize a circadian and in general any biological clock: period, phase and amplitude. While circadian periods have been shown to correlate with entrainment phases, and clock amplitude influences the phase response ...
Hanspeter Herzel   +6 more
doaj   +1 more source

Twisting kappa-deformed phase space [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2003
LaTeX, 18 pages, revised version, accepted for publication in Journal of Physics ...
openaire   +4 more sources

Phase conjugation of twisted Gaussian Schell model beams in stimulated down-conversion

open access: yesNanophotonics, 2021
Stimulated parametric down-conversion is a nonlinear optical process that can be used for phase conjugation and frequency conversion of an optical field.
dos Santos Gustavo H.   +8 more
doaj   +1 more source

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