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1.
Opt Express ; 24(12): 13387-93, 2016 Jun 13.
Artigo em Inglês | MEDLINE | ID: mdl-27410356

RESUMO

A model to characterize the response of a thin media that can exhibit more than one nonlocal nonlinear response when it is illuminated with a Gaussian beam in a z-scan experiment is proposed. The model considers that these nonlocal contributions can be treated as independent contributions in the refractive or absorptive nonlinear response. Numerical results for two nonlocal nonlinear contributions with different magnitudes between them are presented. Experimental results obtained from a hydrogenated amorphous silicon sample are used to corroborate this model.

2.
Opt Express ; 22(25): 30769-76, 2014 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-25607025

RESUMO

By numerically studying the collision between (1 + 1)-Dimensional high order bright spatial solitons in a Kerr nonlinear media we show that after the collision, the high order solitons split into a number of first order solitons that corresponds to its order. Two different collision scenarios are considered: collision between two independent high order solitons and a collision with a virtual soliton simulated by the reflection at an angle of a high order soliton at a linear interface. The results demonstrate that in both cases the high order solitons split showing minor differences.

3.
Opt Express ; 22(23): 27932-41, 2014 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-25402034

RESUMO

Analytical expressions for the normalized transmittance of a thin material with simultaneous nonlocal nonlinear change in refraction and absorption are reported. Gaussian decomposition method was used to obtain the formulas that are adequate for any magnitude of the nonlinear changes. Particular cases of no locality are compared with the local case. Experimental results are reproduced (fitted) with the founded expressions.


Assuntos
Simulação por Computador , Luz , Modelos Teóricos , Óptica e Fotônica , Refratometria/métodos , Espalhamento de Radiação , Dinâmica não Linear
4.
Opt Express ; 20(24): 27411-8, 2012 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-23187598

RESUMO

In this work, we numerically characterize the waveguide properties of the asymmetric collision between two bright spatial solitons in a nonlinear Kerr media. The results demonstrate that the energy carried by a probe beam guided by one soliton can be transferred after the collision to the waveguide created by the other soliton depending on the initial separation between the solitons, the angle of their collision, and in some cases, the particular soliton that initially guides the probe beam. The observed behavior is equivalent to that obtained for the symmetrical collision when there is an initial relative phase between the solitons.


Assuntos
Simulação por Computador , Lasers , Luz , Modelos Teóricos , Refratometria/instrumentação , Espalhamento de Radiação , Desenho Assistido por Computador , Manufaturas
5.
Opt Express ; 18(21): 22067-79, 2010 Oct 11.
Artigo em Inglês | MEDLINE | ID: mdl-20941108

RESUMO

In this work we present a simple model that can be used to calculate the far field intensity distributions when a Gaussian beam cross a thin sample of nonlinear media but the response can be nonlocal.


Assuntos
Óptica e Fotônica , Algoritmos , Simulação por Computador , Luz , Distribuição Normal , Refratometria , Espalhamento de Radiação
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