Plasmon-based nano-lenses

Petru Ghenuche; Romain Quidant; Goncal Badenes

doi:10.1117/12.608341

7 July 2005 Plasmon-based nano-lenses

Petru Ghenuche, Romain Quidant, Goncal Badenes

Proceedings Volume 5840, Photonic Materials, Devices, and Applications; (2005) https://doi.org/10.1117/12.608341
Event: Microtechnologies for the New Millennium 2005, 2005, Sevilla, Spain

Abstract

In the ongoing general trend for miniaturization, there is an increasing interest in the manipulation of electromagnetic fields at the nanometer scale. A main obstacle to this goal is the diffraction limit that prevents from focussing light down to volumes much smaller than the incident wavelength. In order to overcome this limitation, it has been proposed to deal with evanescent fields instead of the conventional propagating beams. Especially, plasmon fields bound at a noble metal interface or around metal nanostructures have shown to be very suitable to control the light confinement down to the nanometer scale. In this work we investigate the near-field coupling in finite metal particle chain geometry. The Green Dyadic method is used to demonstrate that high enhancement factors can be achieved by exploiting the in-plane forward scattering of the particles, with no need for cumbersome geometries with nanometer features.

Citation Download Citation

Petru Ghenuche, Romain Quidant, and Goncal Badenes "Plasmon-based nano-lenses", Proc. SPIE 5840, Photonic Materials, Devices, and Applications, (7 July 2005); https://doi.org/10.1117/12.608341

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