Mapping the electric field distribution of tightly focused cylindrical vector beams with gold nanorings
| Autor: | Fulmes, J., Gollmer, D., Jäger, S., Schäfer, C., Horrer, A., Zhang, D., Adam, Pierre-Michel, Meixner, A., Kern, D., Fleischer, M. |
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| Přispěvatelé: | University of Tübingen, Lumière, nanomatériaux et nanotechnologies (L2n), Institut Charles Delaunay (ICD), Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Optics Express Optics Express, 2018, 26 (12), pp.14982. ⟨10.1364/OE.26.014982⟩ Optics Express, Optical Society of America-OSA Publishing, 2018, 26 (12), pp.14982. ⟨10.1364/OE.26.014982⟩ |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/OE.26.014982⟩ |
| Popis: | International audience; In this paper gold nanorings (NRs) are applied as particularly well-suited sensing elements for mapping the radially symmetric electric fields in the high numerical aperture focus of cylindrical vector beams. The optical properties of gold nanorings are analyzed by a combination of extinction and single particle dark field spectroscopy as well as confocal photoluminescence (PL) imaging. The results are compared to numerical calculations. The in-plane components in the focus of the cylindrical vector beams are estimated through the PL intensity distributions of the NRs. The optimum overlap between the structure and excitation is visualized by a narrow centre spot in the far-field PL scan. |
| Databáze: | OpenAIRE |
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