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Cavity-enhanced light emission from electrically driven carbon nanotubes

Pyatkov, Felix and Fütterling, Valentin and Khasminskaya, Svetlana and Flavel, Benjamin S. and Hennrich, Frank and Kappes, Manfred M. and Krupke, Ralph and Pernice, Wolfram H. P. (2016):
Cavity-enhanced light emission from electrically driven carbon nanotubes.
In: Nature Photonics, 10 (6), pp. 420-427, ISSN 1749-4885,
[Online-Edition: http://dx.doi.org/10.1038/nphoton.2016.70],
[Article]

Abstract

An important advancement towards optical communication on a chip would be the development of integratable, nanoscale photonic emitters with tailored optical properties. Here we demonstrate the use of carbon nanotubes as electrically driven high-speed emitters in combination with a nanophotonic cavity that allows for exceptionally narrow linewidths. The one-dimensional photonic crystal cavities are shown to spectrally select desired emission wavelengths, enhance intensity and efficiently couple light into the underlying photonic network with high reproducibility. Under pulsed voltage excitation, we realize on-chip modulation rates in the GHz range, compatible with active photonic networks. Because the linewidth of the molecular emitter is determined by the quality factor of the photonic crystal, our approach effectively eliminates linewidth broadening due to temperature, surface interaction and hot-carrier injection.

Item Type: Article
Erschienen: 2016
Creators: Pyatkov, Felix and Fütterling, Valentin and Khasminskaya, Svetlana and Flavel, Benjamin S. and Hennrich, Frank and Kappes, Manfred M. and Krupke, Ralph and Pernice, Wolfram H. P.
Title: Cavity-enhanced light emission from electrically driven carbon nanotubes
Language: English
Abstract:

An important advancement towards optical communication on a chip would be the development of integratable, nanoscale photonic emitters with tailored optical properties. Here we demonstrate the use of carbon nanotubes as electrically driven high-speed emitters in combination with a nanophotonic cavity that allows for exceptionally narrow linewidths. The one-dimensional photonic crystal cavities are shown to spectrally select desired emission wavelengths, enhance intensity and efficiently couple light into the underlying photonic network with high reproducibility. Under pulsed voltage excitation, we realize on-chip modulation rates in the GHz range, compatible with active photonic networks. Because the linewidth of the molecular emitter is determined by the quality factor of the photonic crystal, our approach effectively eliminates linewidth broadening due to temperature, surface interaction and hot-carrier injection.

Journal or Publication Title: Nature Photonics
Volume: 10
Number: 6
Uncontrolled Keywords: Carbon nanotubes and fullerenes; Nanocavities; Nanophotonics and plasmonics
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Fachgebiet Molekulare Nanostrukturen
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 10 Jun 2016 05:25
Official URL: http://dx.doi.org/10.1038/nphoton.2016.70
Identification Number: doi:10.1038/nphoton.2016.70
Funders: W.H.P. Pernice acknowledges support by the Deutsche Forschungsgemeinschaft (DFG) grants PE 1832/1-1 & PE 1832/1-2 and the Helmholtz society through grant HIRG-0005, as well as support by the DFG and the State of Baden-Württemberg through the DFG-Center, for Functional Nanostructures (CFN). R. Krupke and F. Pyatkov acknowledge funding by the Volkswagen Foundation. B.S. Flavel acknowledges support by the DFG grant FL 834/1-1. F. Hennrich, M.M. Kappes and R. Krupke acknowledge support by Helmholtz society, through program STN and by the KNMF. We thank S. Kühn and S. Diewald for the help with device fabrication and P. Löser for the preparation of CNT suspensions.
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