- Optical extinction in a single layer of nanorods.
Optical extinction in a single layer of nanorods.
Physical review letters (2012-10-23)
Petru Ghenuche, Grégory Vincent, Marine Laroche, Nathalie Bardou, Riad Haïdar, Jean-Luc Pelouard, Stéphane Collin
PMID23083243
要旨
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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