Results 61 to 70 of about 2,118,821 (229)
Metal-Free Flat Lens Using Negative Refraction by Nonlinear Four-wave Mixing
, 2014 A perfect lens with unlimited resolution has always posed a challenge to both theoretical and experimental physicists. Recent developments in optical meta-materials promise an attractive approach towards perfect lenses using negative refraction to ...
Cao, Jianjun +4 more
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Black and gray Helmholtz Kerr soliton refraction [PDF]
, 2011 efraction of black and gray solitons at boundaries separating different defocusing Kerr media is analyzed within a Helmholtz framework. A universal nonlinear Snell’s law is derived that describes gray soliton refraction, in addition to capturing the ...
Chamorro-Posada, P +2 more
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Optics Express, 2015 A polarization-resolved beam deflection technique is used to separate the bound-electronic and molecular rotational components of nonlinear refractive transients of molecular gases.
M. Reichert +5 more
semanticscholar +1 more source
Ultrafast Dynamics of Optical Nonlinearities in β-Ga2O3
Frontiers in Materials, 2021 We report the different nonlinear optical mechanisms and defect-related carrier dynamics in Sn-doped β-Ga2O3 crystal by utilizing time-resolved pump-probe technique based on phase object under UV excitation.
Yingfei Sun +9 more
doaj +1 more source
Nonlinear optical spectrum of diamond at femtosecond regime
, 2017 Although diamond photonics has driven considerable interest and useful applications, as shown in frequency generation devices and single photon emitters, fundamental studies on the third-order optical nonlinearities of diamond are still scarce, stalling ...
Almeida, Juliana M. P. +5 more
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Negative refraction and spatial echo in optical waveguide arrays [PDF]
, 2012 The special symmetry properties of the discrete nonlinear Schrodinger equation allow a complete revival of the initial wavefunction. That is employed in the context of stationary propagation of light in a waveguide array.
Khomeriki, Ramaz, Tkeshelashvili, Lasha
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The nonlinear optical properties of coupling and decoupling graphene layers
AIP Advances, 2013 Third-order optical nonlinearities of graphene from monolayer to multilayers were investigated in the femtosecond regime, and the contribution of interlayer coupling to the nonlinearities was studied. The nonlinear refractive index γ of the order of 10−9
Wei Chen +9 more
doaj +1 more source
Nonlinear interaction of charged particles with strong laser pulses in a gaseous media
Physical Review Special Topics. Accelerators and Beams, 2007 The charged particles nonlinear dynamics in the field of a strong electromagnetic wave pulse of finite duration and certain form of the envelope, in the refractive medium with a constant and variable refraction indexes, is investigated by means of ...
H. K. Avetissian +2 more
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Al-Mustansiriyah Journal of Science, 2017 Z-scan technique was employed to study the nonlinear optical properties (nonlinear refractive index and nonlinear absorption coefficient) for crystal violet doped polystyrene films as a function of doping ratio in chloroform solvent.
Mahasin F. Hadi +2 more
doaj +1 more source
Nonlinear properties of left-handed metamaterials
, 2003 We analyze nonlinear properties of microstructured materials with negative refraction, the so-called left-handed metamaterials. We consider a two-dimensional periodic structure created by arrays of wires and split-ring resonators embedded into a ...
Alexander A. Zharov +7 more
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