Journal
APPLIED PHYSICS LETTERS
Volume 86, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1927712
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We demonstrate focusing of a plane microwave by a planoconcave lens fabricated from a photonic crystal having a negative refractive index and left-handed electromagnetic properties. An inverse experiment, in which a plane wave is produced from a source placed at the focal point of the lens, is also reported. A frequency-dependent negative refractive index, n(omega)< 0 is obtained for the lens from the experimental data which match well with that determined from band structure calculations. (c) 2005 American Institute of Physics.
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