Mapping bound plasmon propagation on a nanoscale stripe waveguide using quantum dots: influence of spacer layer thickness
| Autor: | Han-Hao Cheng, Alison M. Funston, Chamanei S. Perera, Kristy C. Vernon |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Photoluminescence General Physics and Astronomy Physics::Optics Near and far field Grating lcsh:Chemical technology lcsh:Technology Full Research Paper plasmonics law.invention Optics law Nanotechnology General Materials Science lcsh:TP1-1185 Electrical and Electronic Engineering lcsh:Science Quantum Nonlinear Sciences::Pattern Formation and Solitons Plasmon business.industry lcsh:T quantum dot lcsh:QC1-999 Nanoscience stripe waveguide Quantum dot Excited state spacer layer photoluminescence lcsh:Q business Waveguide lcsh:Physics |
| Zdroj: | Beilstein Journal of Nanotechnology, Vol 6, Iss 1, Pp 2046-2051 (2015) Beilstein Journal of Nanotechnology |
| ISSN: | 2190-4286 |
| Popis: | In this paper we image the highly confined long range plasmons of a nanoscale metal stripe waveguide using quantum emitters. Plasmons were excited using a highly focused 633 nm laser beam and a specially designed grating structure to provide stronger incoupling to the desired mode. A homogeneous thin layer of quantum dots was used to image the near field intensity of the propagating plasmons on the waveguide. We observed that the photoluminescence is quenched when the QD to metal surface distance is less than 10 nm. The optimised spacer layer thickness for the stripe waveguides was found to be around 20 nm. Authors believe that the findings of this paper prove beneficial for the development of plasmonic devices utilising stripe waveguides. |
| Databáze: | OpenAIRE |
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