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  • Simulations of the Effect of Waveguide Cross-section on Quantum Dot-plasmon Coupling

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    Accepted Manuscript (AM)
    Author(s)
    Vernon, KC
    Gomez, DE
    Davis, TJ
    Tischler, N
    Griffith University Author(s)
    Tischler, Nora
    Year published
    2011
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    Abstract
    Quantum dot–plasmon waveguide systems are of interest for the active control of plasmon propagation, and consequently, the development of active nanophotonic devices such as nano-sized optical transistors. This paper is concerned with how varying aspect ratio of the waveguide cross-section affects the quantum dot–plasmon coupling. We compare a stripe waveguide with an equivalent nanowire, illustrating that both waveguides have a similar coupling strength to a nearby quantum dot for small waveguide cross-section, thereby indicating that stripe lithographic waveguides have strong potential use in quantum dot–plasmon waveguide ...
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    Quantum dot–plasmon waveguide systems are of interest for the active control of plasmon propagation, and consequently, the development of active nanophotonic devices such as nano-sized optical transistors. This paper is concerned with how varying aspect ratio of the waveguide cross-section affects the quantum dot–plasmon coupling. We compare a stripe waveguide with an equivalent nanowire, illustrating that both waveguides have a similar coupling strength to a nearby quantum dot for small waveguide cross-section, thereby indicating that stripe lithographic waveguides have strong potential use in quantum dot–plasmon waveguide systems. We also demonstrate that changing the aspect ratio of both stripe and wire waveguides can increase the spontaneous emission rate of the quantum dot into the plasmon mode, by up to a factor of five. The results of this paper will contribute to the optimisation of quantum dot–plasmon waveguide systems and help pave the way for the development of active nanophotonics devices.
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    Journal Title
    Journal of Applied Physics
    Volume
    110
    Issue
    7
    DOI
    https://doi.org/10.1063/1.3650900
    Copyright Statement
    © 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Volume 110, Issue 7, 074315, 2011 and may be found at https://doi.org/10.1063/1.3650900.
    Subject
    Mathematical sciences
    Physical sciences
    Photonics, optoelectronics and optical communications
    Engineering
    Publication URI
    http://hdl.handle.net/10072/172505
    Collection
    • Journal articles

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