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Negative Refraction Makes a Perfect Lens

Negative Refraction Makes a Perfect Lens,10.1103/PhysRevLett.85.3966,Physical Review Letters,J. B. Pendry

Negative Refraction Makes a Perfect Lens   (Citations: 1603)
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Optical lenses have for centuries been one of scientists' prime tools. Their operation is well understood on the ba- sis of classical optics: curved surfaces focus light by virtue of the refractive index contrast. Equally their limitations are dictated by wave optics: no lens can focus light onto an area smaller than a square wavelength. What is there new to say other than to polish the lens more perfectly and to invent slightly better dielectrics? In this Letter I want to challenge the traditional limitation on lens performance and propose a class of "superlenses," and to suggest a prac- tical scheme for implementing such a lens. Let us look more closely at the reasons for limitation in performance. Consider an infinitesimal dipole of fre- quency v in front of a lens. The electric component of the field will be given by some 2D Fourier expansion,
Journal: Physical Review Letters - PHYS REV LETT , vol. 85, no. 18, pp. 3966-3969, 2000
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