Scaling of losses with size and wavelength in nanoplasmonics and metamaterials

Details Scaling of losses with size and wavelength in nanoplasmonics and metamaterials Scaling of losses with size and wavelength in nanoplasmonics and metamaterials

2011-10-04

arxiv.org/abs/1110.0753v1

Physics

Optics

Submitted to APL

Scientific paper

We show that, for the resonant metal-dielectric structures with sub-wavelength confinement of light in all three dimensions, the loss cannot be reduced significantly below the loss of the metal itself unless one operates in the far IR and THz regions of the spectrum or below. Such high losses cannot be compensated by introducing gain due to Purcell-induced shortening of recombination times. The only way low loss optical metamaterials can be engineered is with as yet unknown low loss materials with negative permittivity.

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