Perfect Lensing by a Single Interface: Defying Loss and Bandwidth Limitations of Metamaterials

Autor:	Meir Orenstein, Gilad Rosenblatt
Rok vydání:	2015
Předmět:	Nonlinear system Optics Superlens business.industry Computer science Bandwidth (signal processing) ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION General Physics and Astronomy Metamaterial Nanotechnology Dielectric Lossy compression business
Zdroj:	Physical Review Letters. 115
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.115.195504
Popis:	Loss is known to be detrimental for achieving perfect focusing with the passive perfect lens designs suggested thus far, and it is believed to pose a fundamental barrier. We show that perfect lensing can be achieved with actual lossy left-handed metamaterials, without a need for gain or nonlinearity. The proposed loss-immune perfect lens is composed of a single interface between a conventional dielectric material on the source side and a lossy left-handed material on the image side. Its immunity to material loss was derived analytically using three complementary methodologies, confirming perfect lensing with point-to-point accuracy and shedding light on the underlying focusing mechanism. This result provides a new road map for practical realization of a near-field camera based on the single-interface lens design.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::897f7f66a1d2d10dacbd7f2a6d36fc68 https://doi.org/10.1103/physrevlett.115.195504 Zobrazit plný text záznamu