title: Focusing of electromagnetic waves by a left-handed metamaterial flat lens.
abstract: We present here the experimental results from research conducted on negative refraction and focusing by a two-dimensional (2D) left-handed metamaterial (LHM) slab. By measuring the refracted electromagnetic (EM) waves from a LHM slab, we find an effective refractive index of -1.86. A 2D scanning transmission measurement technique is used to measure the intensity distribution of the EM waves that radiate from the point source. The flat lens behavior of a 2D LHM slab is demonstrated for two different point source distances of d(s) = 0.5lambda and lambda. The full widths at half maximum of the focused beams are 0.36lambda and 0.4lambda, respectively, which are both below the diffraction limit.
authors.forename: Koray
authors.initials: K
authors.lastname: Aydin
authors.forename: Irfan
authors.initials: I
authors.lastname: Bulu
authors.forename: Ekmel
authors.initials: E
authors.lastname: Ozbay