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Mapping the electric field distribution of tightly focused cylindrical vector beams with gold nanorings

Abstract : 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.
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https://hal-utt.archives-ouvertes.fr/hal-02369550
Contributor : Jean-Baptiste Vu Van Connect in order to contact the contributor
Submitted on : Tuesday, November 19, 2019 - 9:31:53 AM
Last modification on : Wednesday, September 15, 2021 - 3:03:44 PM

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J. Fulmes, D. Gollmer, S. Jäger, C. Schäfer, A. Horrer, et al.. Mapping the electric field distribution of tightly focused cylindrical vector beams with gold nanorings. Optics Express, Optical Society of America - OSA Publishing, 2018, 26 (12), pp.14982. ⟨10.1364/OE.26.014982⟩. ⟨hal-02369550⟩

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