Results 21 to 30 of about 2,863,831 (279)

Optical bistability with bound states in the continuum in dielectric gratings [PDF]

open access: yes, 2020
We consider light scattering by dielectric gratings supporting optical bound states in the continuum. Due to the presence of instantaneous Kerr nonlinearity critical field enhancement in the spectral vicinity of the bound state triggers the effect of ...
D. Maksimov, A. Bogdanov, E. Bulgakov
semanticscholar   +1 more source

OPTICAL BISTABILITY IN A DEGENERATE TWO-LEVEL EIT MEDIUM UNDER THE INFLUENCE OF AN EXTERNAL MAGNETIC FIELD: AN ANALYTICAL APPROACH

open access: yesTạp chí Khoa học Đại học Đà Lạt, 2021
We investigate the behavior of optical bistability in a degenerate two-level atomic medium using an external magnetic field to separate the lower level into two distinct levels that both connect to an upper level by the probe and coupling laser fields ...
Le Thi Minh Phuong   +6 more
doaj   +1 more source

Hexagonal patterns in optical bistability [PDF]

open access: yesPhysical Review A, 1992
The mean-field model of optical bistability in a ring cavity is extended to include diffraction in two transverse dimensions. Nonlinear analysis in the neighborhood of the instability of the homogeneous solution indicates the formation of stable hexagonal patterns, and this is confirmed by numerical simulation, with reasonable quantitative agreement ...
Firth, WJ   +3 more
openaire   +2 more sources

Low-Threshold and Tunable Optical Bistability Based on Topological Edge State in One-Dimensional Photonic Crystal Heterostructure With Graphene

open access: yesIEEE Access, 2020
In this article, we present a theoretical analysis of the optical bistability phenomenon of the transmitted light beam in a graphene-based one-dimensional photonic crystal heterostructure in terahertz frequency range.
Yuxiang Peng   +8 more
doaj   +1 more source

Quantum resonant optical bistability with a narrow atomic transition: bistability phase diagram in the bad cavity regime

open access: yesNew Journal of Physics, 2023
We report on the observation of a novel manifestation of saturation-induced optical bistability in a resonantly pumped optical ring cavity interacting strongly with a cloud of atoms via a narrow atomic transition.
D Rivero   +5 more
doaj   +1 more source

Optical bistability in two-dimensional nonlinear composites of coated cylinders with nonlinear core and graded shell

open access: yesEPJ Applied Metamaterials, 2020
The intrinsic optical bistability of the nonlinear composite consisting of coated cylinders with nonlinear core and graded Drude shell is investigated with self-consistent mean-field approximation.
Wu Ya M.   +4 more
doaj   +1 more source

Temperature Dependence of Optical Bistability in Superconductor–Semiconductor Photonic Crystals Embedded with Graphene

open access: yesCrystals, 2023
We theoretically investigate the optical bistability in superconductor–semiconductor photonic crystals composed of graphene. The photonic crystals are symmetric to the center and arranged alternately by the superconductor (HgBa2Ca2Cu3O8+δ) and ...
Libing Qian   +5 more
doaj   +1 more source

Graphene-based low-threshold and tunable optical bistability in one-dimensional photonic crystal Fano resonance heterostructure at optical communication band.

open access: yesOptics Express, 2020
In this paper, the one-dimensional photonic crystal Fano resonance heterostructure is used to achieve low-threshold and tunable graphene-based optical bistability of the transmitted and reflected light beam at optical communication band.
Yuxiang Peng   +6 more
semanticscholar   +1 more source

Nonclassical correlated optical multistability at low photon level for cavity electromagnetically induced transparency

open access: yesNew Journal of Physics, 2022
We study the nonequilibrium dynamic behaviors in a driven-dissipative single-atom cavity electromagnetically induced transparency. The optical bistability and multistability beyond a Kerr nonlinearity are observed utilizing the optical Stark shift ...
Jing Tang, Yuangang Deng
doaj   +1 more source

Intrinsic optical bistability of photon avalanching nanocrystals [PDF]

open access: yesNature Photonics
Optically bistable materials respond to a single input with two possible optical outputs, contingent on excitation history. Such materials would be ideal for optical switching and memory, but the limited understanding of intrinsic optical bistability ...
A. Skripka   +9 more
semanticscholar   +1 more source

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