Nonlinear oscillator metamaterial model: numerical and experimental verification.


Autoria(s): Poutrina, E; Huang, D; Urzhumov, Y; Smith, DR
Data(s)

25/04/2011

Formato

8312 - 8319

Identificador

http://www.ncbi.nlm.nih.gov/pubmed/21643082

212786

Opt Express, 2011, 19 (9), pp. 8312 - 8319

http://hdl.handle.net/10161/5077

1094-4087

Idioma(s)

ENG

en_US

Relação

Opt Express

10.1364/OE.19.008312

Tipo

Journal Article

Cobertura

United States

Resumo

We verify numerically and experimentally the accuracy of an analytical model used to derive the effective nonlinear susceptibilities of a varactor-loaded split ring resonator (VLSRR) magnetic medium. For the numerical validation, a nonlinear oscillator model for the effective magnetization of the metamaterial is applied in conjunction with Maxwell equations and the two sets of equations solved numerically in the time-domain. The computed second harmonic generation (SHG) from a slab of a nonlinear material is then compared with the analytical model. The computed SHG is in excellent agreement with that predicted by the analytical model, both in terms of magnitude and spectral characteristics. Moreover, experimental measurements of the power transmitted through a fabricated VLSRR metamaterial at several power levels are also in agreement with the model, illustrating that the effective medium techniques associated with metamaterials can accurately be transitioned to nonlinear systems.

Palavras-Chave #Computer Simulation #Manufactured Materials #Models, Theoretical #Nonlinear Dynamics #Oscillometry #Refractometry