| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 786 0 |
 SM ISO690:2012SERGENTU, Vladimir, URSACHI, Veaceslav, TIGINYANU, Ion, FOCA, F., FOLL, Helmut, BOYD, Robert W.. Design of negative-refractive-index materials on the basis of rods with a gradient of the dielectric constant. In: Applied Physics Letters, 2007, vol. 91, p. 0. ISSN 0003-6951. DOI: https://doi.org/10.1063/1.2770964 |
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  Applied Physics Letters |
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| Volumul 91 / 2007 / ISSN 0003-6951 | ||||||
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| DOI:https://doi.org/10.1063/1.2770964 | ||||||
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The authors propose an approach to the design of negative-refractive-index materials based on the use of dielectric rods with a gradient of the dielectric constant. A triangular-lattice photonic crystal assembled from multilayer dielectric rods with a refractive index approximating a fish-eye profile is shown to exhibit a negative refractive index in the wavelength range defined by the inequality 0.67<aλ<0.83, where a is the lattice constant of the photonic crystal. A lens consisting of a plane-parallel slab of such a photonic crystal slab is shown to be able to form an image of a point source in this wavelength range. According to the calculations, particularly high-quality images can be obtained at the wavelength λ= (32) a, where the fish-eye dielectric rods scatter the light like a medium with the refractive index equal to -0.85. |
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| Cuvinte-cheie Lattice constants, Permittivity, refractive index, Wavelength, Image quality, light scattering |
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Dublin Core Export
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Sergentu, V.V.</dc:creator> <dc:creator>Ursachi, V.V.</dc:creator> <dc:creator>Tighineanu, I.M.</dc:creator> <dc:creator>Foca, F.</dc:creator> <dc:creator>Foll, H.</dc:creator> <dc:creator>Boyd, R.</dc:creator> <dc:date>2007-12-01</dc:date> <dc:description xml:lang='en'><p>The authors propose an approach to the design of negative-refractive-index materials based on the use of dielectric rods with a gradient of the dielectric constant. A triangular-lattice photonic crystal assembled from multilayer dielectric rods with a refractive index approximating a fish-eye profile is shown to exhibit a negative refractive index in the wavelength range defined by the inequality 0.67<aλ<0.83, where a is the lattice constant of the photonic crystal. A lens consisting of a plane-parallel slab of such a photonic crystal slab is shown to be able to form an image of a point source in this wavelength range. According to the calculations, particularly high-quality images can be obtained at the wavelength λ= (32) a, where the fish-eye dielectric rods scatter the light like a medium with the refractive index equal to -0.85.</p></dc:description> <dc:identifier>10.1063/1.2770964</dc:identifier> <dc:source>Applied Physics Letters () 0-0</dc:source> <dc:subject>Lattice constants</dc:subject> <dc:subject>Permittivity</dc:subject> <dc:subject>refractive index</dc:subject> <dc:subject>Wavelength</dc:subject> <dc:subject>Image quality</dc:subject> <dc:subject>light scattering</dc:subject> <dc:title>Design of negative-refractive-index materials on the basis of rods with a gradient of the dielectric constant</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>
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