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Optics Letters

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  • Vol. 30, Iss. 17 — Sep. 1, 2005
  • pp: 2317–2319

Light collimation and focusing by a thin flat metallic slab

S. Ioanid, Ming Bai, N. García, A. Pons, and P. Corredera  »View Author Affiliations


Optics Letters, Vol. 30, Issue 17, pp. 2317-2319 (2005)
http://dx.doi.org/10.1364/OL.30.002317


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Abstract

We present experimental and theoretical work showing that a flat metallic slab can collimate and focus light impinging on the slab from a point source. The effect is optimized when the radiation is around the bulk, not at the surface, plasma frequency. Also, 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 Al, whose imaginary part of permittivity is very small at the plasma frequency in UV radiation. Generalization to other materials and radiations are also discussed.

© 2005 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(250.5300) Optoelectronics : Photonic integrated circuits

Citation
S. Ioanid, Ming Bai, N. García, A. Pons, and P. Corredera, "Light collimation and focusing by a thin flat metallic slab," Opt. Lett. 30, 2317-2319 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-17-2317


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