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Near-field imaging of surface-plasmon vortex-modes around a single elliptical nanohole in a gold film
We present scanning near-field images of surface plasmon modes around a single elliptical nanohole in 88 nm thick Au film. We find that rotating surface plasmon vortex modes carrying extrinsic orbital angular momentum can be induced under linearly polarized illumination. The vortex modes are obtaine...
| Autores principales: | , , , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Nature Publishing Group UK
2019
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6441006/ https://www.ncbi.nlm.nih.gov/pubmed/30926866 http://dx.doi.org/10.1038/s41598-019-41781-2 |