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“Plasmonics” in free space: observation of giant wavevectors, vortices, and energy backflow in superoscillatory optical fields
Evanescent light can be localized at the nanoscale by resonant absorption in a plasmonic nanoparticle or taper or by transmission through a nanohole. However, a conventional lens cannot focus free-space light beyond half of the wavelength λ. Nevertheless, precisely tailored interference of multiple...
| Autores principales: | , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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Nature Publishing Group UK
2019
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6318212/ https://www.ncbi.nlm.nih.gov/pubmed/30622705 http://dx.doi.org/10.1038/s41377-018-0112-z |