Document Type

Article

Journal/Book Title/Conference

Optics Letters

Volume

39

Issue

19

Publisher

The Optical Society

Publication Date

9-29-2014

First Page

5693

Last Page

5696

DOI

10.1364/OL.39.005693

Abstract

In recent papers, it has been theoretically shown that by using dual-period wire gratings, it is possible to control the relative efficiencies of the diffracted orders, regardless of the wires’ material, incident polarization and wavelength. In this Letter, we experimentally demonstrate, for the first time, that by appropriately choosing the geometrical parameters of a nanometric periodic structure, it is possible to control the optical response in the visible range. We show examples of nanostructures designed to cancel out or to intensify a particular diffraction order. Such nanostructures allow a broad control over the directionality and the intensity of the diffracted light, which makes them useful for applications such as highly directional optical nanoantennas and photonic multiplexers.

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