2010-11-01
Three-dimensional negative index of refraction at optical frequencies by coupling plasmonic waveguides
Publication
Publication
Phys. Rev. Lett. , Volume 105 - Issue Article number: 223901 p. 1- 4
We identify a route towards achieving a negative index of refraction at optical frequencies based on coupling between plasmonic waveguides that support backwards waves. We show how modal symmetry can be exploited in metal-dielectric waveguide pairs to achieve negative refraction of both phase and energy. Control of waveguide coupling yields a metamaterial consisting of a one-dimensional multilayer stack that exhibits an isotropic index of - 1 at a free-space wavelength of 400 nm. The concepts developed here may inspire new low-loss metamaterial designs operating close to the metal plasma frequency.
| Additional Metadata | |
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| H.J. Bakker (Huib) | |
| doi.org/10.1103/PhysRevLett.105.223901 | |
| Phys. Rev. Lett. | |
| Organisation | Photonic Materials |
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Verhagen, E., de Waele, R., Kuipers, K., & Polman, A. (2010). Three-dimensional negative index of refraction at optical frequencies by coupling plasmonic waveguides. Phys.Rev.Lett., 105(Article number: 223901), 1–4. doi:10.1103/PhysRevLett.105.223901 |
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