Second-harmonic generation in nonlinear left-handed metamaterials

Abstract

We study the second-harmonic generation in left-handed metamaterials with a quadratic nonlinear response. We demonstrate a novel type of the exact phase matching between the backward propagating wave of the fundamental frequency and the forward propagating wave of the second harmonics. We show that this novel parametric process can convert a surface of the left-handed metamaterial into an effective mirror totally reflecting the second harmonics generated by an incident wave. We derive and analyze theoretically the coupled-mode equations for a semi-infinite nonlinear metamaterial. We also study numerically the second-harmonic generation by a metamaterial slab of a finite thickness, and reveal the existence of multistable nonlinear effects.

arXiv comment6 pages, 6 figures

References in corpus (2)

• Nonlinear properties of left-handed metamaterials
• Subwavelength imaging with opaque left-handed nonlinear lens

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