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- W1994358516 abstract "We experimentally and theoretically demonstrate single-beam negative refraction and superlensing in the valence band of a two-dimensional photonic crystal operating in the microwave regime. By measuring the refracted electromagnetic waves from a slab shaped photonic crystal, we find a refractive index of -1.94 that is very close to the theoretical value of -2.06. A scanning transmission measurement technique is used to measure the spatial power distribution of the focused electromagnetic waves that radiate from a point source. The full width at half maximum of the focused beam is measured to be 0.21 lambda, which is in good agreement with the finite difference time domain method simulations. We also report a subwavelength resolution for the image of two incoherent point sources, which are separated by a distance of lambda/3." @default.
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- W1994358516 date "2003-11-11" @default.
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- W1994358516 title "Subwavelength Resolution in a Two-Dimensional Photonic-Crystal-Based Superlens" @default.
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- W1994358516 doi "https://doi.org/10.1103/physrevlett.91.207401" @default.
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