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منابع مشابه
Perfect imaging without negative refraction
Perfect imaging has been believed to rely on negative refraction, but here we show that an ordinary positively–refracting optical medium may form perfect images as well. In particular, we establish a mathematical proof that Maxwell’s fish eye in two–dimensional integrated optics makes a perfect instrument with a resolution not limited by the wavelength of light. We also show how to modify the f...
متن کاملCoherent perfect nanoabsorbers based on negative refraction.
Based on both analytical dipole model analyses and numerical simulations, we propose a concept of coherent perfect nanoabsorbers (CPNAs) for divergent beams. This concept makes use of the properties of a slab with negative refraction and small losses. The proposed CPNA device would allow focusing radiation in nanoscale regions, and hence could be applied in optical nanodevices for such diverse ...
متن کاملPerfect antireflection via negative refraction
We suggest a geometrical framework to discuss the action of slabs of negatively refracting materials. We show that these slabs generate the same orbits as normal materials, but traced out in opposite directions. This property allows us to confirm that the action of any lossless multilayer can be optically cancelled by putting it together with the multilayer constructed as the inverted mirror im...
متن کاملDoes negative refraction make a perfect lens?
Article history: Received 22 August 2008 Accepted 1 September 2008 Communicated by V.M. Agranovich PACS: 78.20.Ci 42.30.Wb 73.20.Mf
متن کاملNegative refraction makes a perfect lens
With a conventional lens sharpness of the image is always limited by the wavelength of light. An unconventional alternative to a lens, a slab of negative refractive index material, has the power to focus all Fourier components of a 2D image, even those that do not propagate in a radiative manner. Such "superlenses" can be realized in the microwave band with current technology. Our simulations s...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2011
ISSN: 1367-2630
DOI: 10.1088/1367-2630/13/2/028002