Near-sighted superlens

Opt Lett. 2005 Jan 1;30(1):75-7. doi: 10.1364/ol.30.000075.

Abstract

We consider the problem of subwavelength imaging via a slab of a left-handed medium (LHM) in the presence of material losses. We derive the analytical expression for the resolution limit of a LHM-based lens and demonstrate that the area of its subwavelength performance is usually limited to the near-field zone.