Results 51 to 60 of about 2,118,821 (229)

Low- and High-Order Optical Nonlinearities of Quantum Dots

open access: yesPhotonics, 2022
Various potential applications of quantum dots (QDs) require knowledge of their optical nonlinearities. In this review, the third-order nonlinearities responsible for the saturable absorption, two-photon absorption, reverse saturable absorption, and ...
Rashid A. Ganeev
doaj   +1 more source

Deflection of light by a Coulomb charge in Born–Infeld electrodynamics

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We study the propagation of light under a strong electric field in Born–Infeld electrodynamics. The nonlinear effect can be described by the effective indices of refraction.
Jin Young Kim
doaj   +1 more source

Laser Induced Nonlinear Optical Properties of Zinc Oxide Thin Film Prepared by Sol-Gel Method [PDF]

open access: yesЖурнал нано- та електронної фізики, 2011
Optical nonlinearities of spin coated ZnO thin film have been investigated by using single beam Z-Scan technique in the visible region. X- ray diffraction shows that all films are oriented along the c-axis direction of the hexagonal crystal structure ...
Vinay Kumari   +4 more
doaj  

Effect of femtosecond laser pulse repetition rate on nonlinear optical properties of organic liquids [PDF]

open access: yesPeerJ Physical Chemistry, 2019
The effect of the repetition rate of femtosecond laser pulses on the two-photon absorption and nonlinear refraction of pure organic liquids is presented using the conventional Z-scan technique. Such a study provides a way to determine the nature of light-
Sandeep Kumar Maurya   +2 more
doaj   +2 more sources

Third-order nonlinear optical response of push-pull azobenzene polymers [PDF]

open access: yes, 2012
The nonlinear optical response of a series of azo-containing side-chain polymers is investigated using Z-scan technique, employing 35 ps and 4 ns laser pulses, at 532 nm.
A. Kolendo   +7 more
core   +4 more sources

Light guiding light: nonlinear refraction in rubidium vapour [PDF]

open access: yesTechnical Digest. Summaries of papers presented at the Quantum Electronics and Laser Science Conference. Postconference Technical Digest (IEEE Cat. No.01CH37172), 2001
A quantum mechanical model of the interaction of rubidium atoms with two lasers was developed. The dielectric polarization of the rubidium as a function of the frequency was predicted using a quantum mechanical model. The presence of two major isotopes of rubidium was studied.
Andersen, J. A.   +6 more
openaire   +2 more sources

Giant Goos–Hänchen shifts and radiation-induced trapping of Helmholtz solitons at nonlinear interfaces [PDF]

open access: yes, 2011
Giant Goos–Hänchen shifts and radiation-induced trapping are studied at the planar boundary separating two focusing Kerr media within the framework of the Helmholtz theory.
Chamorro-Posada, P   +2 more
core   +2 more sources

A closer look at two-photon absorption, absorption saturation and nonlinear refraction in gold nanoclusters

open access: yes, 2016
The optical properties of atomically-precise gold nanoclusters differ significantly from those of plasmonic gold nanoparticles, in both linear and nonlinear regimes.
Joanna Olesiak‐Bańska   +3 more
semanticscholar   +1 more source

Perspectives on nonlinear optics of graphene: Opportunities and challenges

open access: yesAPL Photonics, 2022
The first nonlinear-optical experiments with graphene date back over a decade, and a wide range of research breakthroughs has been reported since then, particularly on the third-order nonlinearities of the material.
Nathalie Vermeulen
doaj   +1 more source

Solitary electromagnetic waves propagation in the asymmetric oppositely-directed coupler

open access: yes, 2009
We consider the electromagnetic waves propagating in the system of coupled waveguides. One of the system components is a standard waveguide fabricated from nonlinear medium having positive refraction and another component is a waveguide produced from an ...
A. Hasegawa   +7 more
core   +1 more source

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