Results 21 to 30 of about 20,822 (258)

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

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

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

Terahertz optical bistability of graphene-coated cylindrical core–shell nanoparticles

open access: yesJournal of Theoretical and Applied Physics, 2018
In this study, we investigate the optical bistability of graphene-coated nanoparticles with cylindrical core–shell structure at terahertz frequency, because graphene displays optical bistability and multistability in a broad range of incident optical ...
Tayebeh Naseri   +3 more
doaj   +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

Bistability patterns and nonlinear switching with very high contrast ratio in a 1550 nm quantum dash semiconductor laser [PDF]

open access: yes, 2012
We report on the experimental observation of optical bistability (OB) and nonlinear switching (NS) in a nanostructure laser; specifically a 1550 nm quantum dash Fabry-Perot laser subject to external optical injection and operated in reflection. Different
A. Hurtado   +6 more
core   +1 more source

Power and wavelength polarization bistability with very wide hysteresis cycles in a 1550nm-VCSEL subject to orthogonal optical injection [PDF]

open access: yes, 2009
We have measured optical power and wavelength polarization bistability in a 1550nm-Vertical Cavity Surface-Emitting Laser (VCSEL) subject to orthogonally-polarized optical injection into the orthogonal polarization of the fundamental transverse mode ...
Ana Quirce   +26 more
core   +2 more sources

Optical bistability for two-level atoms in a standing-wave cavity [PDF]

open access: yes, 1982
Observations of optical bistability are reported for a system composed of multiple atomic beams passing through a high-finesse optical cavity. Both the transmitted power and the intracavity fluorescent intensity have been recorded as functions of ...
Grant, D. E., Kimble, H. J.
core   +2 more sources

Low threshold optical bistability based on coupled graphene Tamm states

open access: yesResults in Physics, 2021
The optical bistability based on an asymmetric dielectric Bragg reflector (DBR)–graphene–DBR (ADGD) structure is investigated numerically in terahertz frequencies.
Yuexiang Wu   +3 more
doaj   +1 more source

Coherent control of intersubband optical bistability in quantum wells [PDF]

open access: yes, 2003
We present a study of the nonlinear intersubband (ISB) response of conduction electrons in a GaAs/AlGaAs quantum well to strong THz radiation, using a density-matrix approach combined with time-dependent density-functional theory. We demonstrate coherent
Ullrich, C. A., Wijewardane, H. O.
core   +3 more sources

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