Focusing of electromagnetic waves by a left-handed metamaterial flat lens

Focusing of electromagnetic waves by a left-handed metamaterial flat lens

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 tra...

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Veröffentlicht in:Optics express 2005-10, Vol.13 (22), p.8753-8759
Hauptverfasser: Aydin, Koray, Bulu, Irfan, Ozbay, Ekmel
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Bulu, Irfan
Ozbay, Ekmel
description 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.
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title Focusing of electromagnetic waves by a left-handed metamaterial flat lens
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