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Title: Superlens made of a metamaterial with extreme effective parameters
Authors: Silveirinha, Mário G.
Fernandes, Carlos A.
Costa, Jorge R.
Keywords: Lenses
Optical arrays
Optical design techniques
Optical materials
Optical transfer function
Refractive index
Issue Date: Nov-2008
Publisher: American Physical Society
Abstract: We propose a superlens formed by an ultradense array of crossed metallic wires. It is demonstrated that, due to the anomalous interaction between crossed wires, the structured substrate is characterized by an anomalously high index of refraction and supports strongly confined guided modes with very short propagation wavelengths. It is theoretically proven that a planar slab of such structured material makes a superlens that may compensate for the attenuation introduced by free-space propagation and restore the subwavelength details of the source. The bandwidth of the proposed device can be quite significant since the response of the structured substrate is nonresonant. The theoretical results are fully supported by numerical simulations.
Description: WOS:000262607800045 (Nº de Acesso Web of Science)
Peer reviewed: Sim
ISSN: 1098-0121
Publisher version: The definitive version is available at:
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica
IT-RI - Artigo em revista internacional com arbitragem científica

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