Directional emission from a single plasmonic scatterer

Toon Coenen, Felipe Bernal Arango, A. Femius Koenderink and Albert Polman ()
Additional contact information
Toon Coenen: Center for Nanophotonics, FOM Institute AMOLF, Science Park 104
Felipe Bernal Arango: Center for Nanophotonics, FOM Institute AMOLF, Science Park 104
A. Femius Koenderink: Center for Nanophotonics, FOM Institute AMOLF, Science Park 104
Albert Polman: Center for Nanophotonics, FOM Institute AMOLF, Science Park 104

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Directing light emission is key for many applications in photonics and biology. Optical antennas made from nanostructured plasmonic metals are suitable candidates for this purpose but designing antennas with good directional characteristics can be challenging, especially when they consist of multiple elements. Here we show that strongly directional emission can also be obtained from a simple individual gold nanodisk, utilizing the far-field interference of resonant electric and magnetic modes. Using angle-resolved cathodoluminescence spectroscopy, we find that the spectral and angular response strongly depends on excitation position. For excitation at the nanodisk edge, interference between in-plane and out-of-plane dipole components leads to strong beaming of light. For large nanodisks, higher-order multipole components contribute significantly to the scattered field, leading to enhanced directionality. Using a combination of full-wave simulations and analytical point scattering theory we are able to decompose the calculated and measured scattered fields into dipolar and quadrupolar contributions.

Date: 2014
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms4250 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4250

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms4250

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().