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Título : Light Collimation and Focusing by a Thin Flat Metallic Slab
Autor : Ioanid, S.; Ming, Bai; Pons Aglio, Alicia ; Corredera, Pedro ; García García, Nicolás
Palabras clave : Light collimation
Metal Permittivity
Silver
Aluminium
Integrated optics : Guided waves
Optoelectronics : Photonic integrated circuits
Fecha de publicación : 23-may-2005
Editor: Optical Society of America
Citación : arXiv:cond-mat/0505538v1 [cond-mat.other]
Opt. Lett. 30, 2317-2319 (2005)
Resumen: We 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.
Descripción : 6 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
URI : http://hdl.handle.net/10261/4869
ISSN: 0146-9592
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