Transmitting Surface Plasmon Polaritons across Nanometer-Sized Gaps by Optical near-Field Coupling

Smirnov V, Stephan S, Westphal M, Emmrich D, Beyer A, Gölzhäuser A, Lienau C, Silies M (2021)
ACS Photonics 8(3): 832-840.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Smirnov, Vladimir; Stephan, Sven; Westphal, MichaelUniBi; Emmrich, DanielUniBi; Beyer, AndréUniBi ; Gölzhäuser, ArminUniBi ; Lienau, Christoph; Silies, Martin
Abstract / Bemerkung
Metallic nanostructures can transport electromagnetic fields in the form of surface plasmon polariton (SPP) excitations, focus them into nanometric spots, and transfer them to nearby nanostructures by near-field coupling. This provides a basic functionality for designing new plasmonic devices that can greatly enhance light-matter coupling and facilitate ultrafast and efficient all-optical switching on the nanoscale. Here, we study a prototypical device geometry, a bow-tie antenna equipped with curved line gratings, for the efficient coupling of light into and across the antenna nanogap. We experimentally demonstrate the spectrally broadband launching and propagation of SPP waves over more than 10 mu m on one arm of the antenna, their focusing into and transmission across the gap being studied by the plasmon outcoupling on the other arm. A substantial increase in the coupling efficiency for antennas with gap widths below 20 nm proves that the optical near-field coupling between the two antenna arms dominates the gap transmission. We find overall transmission efficiencies for nanofocusing, gap transmission, and plasmon outcoupling of up to 4%. A finite-difference time-domain simulation supports our experimental findings. This makes such bow-tie couplers an interesting platform for sensitively probing near-field coupling to single quantum emitters and for the ultrafast switching of light by light on the nanoscale.
Stichworte
Surface Plasmon Polaritons; Light Confinement; Helium Ion Microscopy; Nanofocusing; Sketch and Peel; Near-Field Coupling
Erscheinungsjahr
2021
Zeitschriftentitel
ACS Photonics
Band
8
Ausgabe
3
Seite(n)
832-840
eISSN
2330-4022
Page URI
https://pub.uni-bielefeld.de/record/2954230

Zitieren

Smirnov V, Stephan S, Westphal M, et al. Transmitting Surface Plasmon Polaritons across Nanometer-Sized Gaps by Optical near-Field Coupling. ACS Photonics. 2021;8(3):832-840.
Smirnov, V., Stephan, S., Westphal, M., Emmrich, D., Beyer, A., Gölzhäuser, A., Lienau, C., et al. (2021). Transmitting Surface Plasmon Polaritons across Nanometer-Sized Gaps by Optical near-Field Coupling. ACS Photonics, 8(3), 832-840. https://doi.org/10.1021/acsphotonics.0c01797
Smirnov, V., Stephan, S., Westphal, M., Emmrich, D., Beyer, A., Gölzhäuser, A., Lienau, C., and Silies, M. (2021). Transmitting Surface Plasmon Polaritons across Nanometer-Sized Gaps by Optical near-Field Coupling. ACS Photonics 8, 832-840.
Smirnov, V., et al., 2021. Transmitting Surface Plasmon Polaritons across Nanometer-Sized Gaps by Optical near-Field Coupling. ACS Photonics, 8(3), p 832-840.
V. Smirnov, et al., “Transmitting Surface Plasmon Polaritons across Nanometer-Sized Gaps by Optical near-Field Coupling”, ACS Photonics, vol. 8, 2021, pp. 832-840.
Smirnov, V., Stephan, S., Westphal, M., Emmrich, D., Beyer, A., Gölzhäuser, A., Lienau, C., Silies, M.: Transmitting Surface Plasmon Polaritons across Nanometer-Sized Gaps by Optical near-Field Coupling. ACS Photonics. 8, 832-840 (2021).
Smirnov, Vladimir, Stephan, Sven, Westphal, Michael, Emmrich, Daniel, Beyer, André, Gölzhäuser, Armin, Lienau, Christoph, and Silies, Martin. “Transmitting Surface Plasmon Polaritons across Nanometer-Sized Gaps by Optical near-Field Coupling”. ACS Photonics 8.3 (2021): 832-840.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Suchen in

Google Scholar