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arXiv · 1204.4937

Optical extinction in a single layer of nanorods

Petru Ghenuche·Grégory Vincent·Marine Laroche·Nathalie Bardou·Riad Haïdar·Jean-Luc Pelouard·Stéphane Collin
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Abstract

We demonstrate that almost 100 % of incident photons can interact with a monolayer of scatterers in a symmetrical environment. Nearly-perfect optical extinction through free-standing transparent nanorod arrays has been measured. The sharp spectral opacity window, in the form of a characteristic Fano resonance, arises from the coherent multiple scattering in the array. In addition, we show that nanorods made of absorbing material exhibit a 25-fold absorption enhancement per unit volume compared to unstructured thin film. These results open new perspectives for light management in high-Q, low volume dielectric nanostructures, with potential applications in optical systems, spectroscopy, and optomechanics.

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Petru Ghenuche, Grégory Vincent, Marine Laroche, Nathalie Bardou, Riad Haïdar, Jean-Luc Pelouard, Stéphane Collin. 2012-04-22. Optical extinction in a single layer of nanorods. https://doi.org/10.1103/physrevlett.109.143903

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