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Title

Light Collimation and Focusing by a Thin Flat Metallic Slab

AuthorsIoanid, S.; Ming, Bai; Pons Aglio, Alicia ; Corredera, Pedro ; García García, Nicolás
KeywordsLight collimation
Metal Permittivity
Silver
Aluminium
Integrated optics : Guided waves
Optoelectronics : Photonic integrated circuits
Issue Date23-May-2005
PublisherOptical Society of America
CitationarXiv:cond-mat/0505538v1 [cond-mat.other]
Opt. Lett. 30, 2317-2319 (2005)
AbstractWe present experimental and theoretical work showing that a flat metallic slab can collimate and focus light impinging on the slab from a punctual source. The effect is optimised when the radiation is around the bulk, not at the surface, plasma frequency. And the smaller the imaginary part of the permittivity is, the better the collimation. Experiments for Ag in the visible as well as calculations are presented. We also discuss the interesting case of the Aluminium whose imaginary part of the permittivity is very small at the plasma frequency in UV radiation. Generalization to other materials and radiations are also discussed.
Description6 pages, 3 figures. To be published on Optics Letter.-- Final full-text version of the paper available at: http://www.opticsinfobase.org/abstract.cfm?URI=ol-30-17-2317
URIhttp://hdl.handle.net/10261/4869
ISSN0146-9592
Appears in Collections:(IFA) Artículos
(LFSPyN) Artículos
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