title: Perfect Lensing by a Single Interface: Defying Loss and Bandwidth Limitations of Metamaterials.
abstract: 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.
authors.affiliation: Department of Electrical Engineering, Technion, Haifa 32000, Israel.
authors.forename: Gilad
authors.initials: G
authors.lastname: Rosenblatt
authors.affiliation: Department of Electrical Engineering, Technion, Haifa 32000, Israel.
authors.forename: Meir
authors.initials: M
authors.lastname: Orenstein