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Title: Simulations of the spontaneous emission of a quantum dot near a gap plasmon waveguide

In this paper, we modeled a quantum dot at near proximity to a gap plasmon waveguide to study the quantum dot-plasmon interactions. Assuming that the waveguide is single mode, this paper is concerned about the dependence of spontaneous emission rate of the quantum dot on waveguide dimensions such as width and height. We compare coupling efficiency of a gap waveguide with symmetric configuration and asymmetric configuration illustrating that symmetric waveguide has a better coupling efficiency to the quantum dot. We also demonstrate that optimally placed quantum dot near a symmetric waveguide with 50 nm × 50 nm cross section can capture 80% of the spontaneous emission into a guided plasmon mode.
Authors:
; ;  [1]
  1. Plasmonic Device Group, Queensland University of Technology, GPO box 2434, Brisbane, Queensland (Australia)
Publication Date:
OSTI Identifier:
22278110
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; COUPLING; EFFICIENCY; EMISSION; PLASMONS; QUANTUM DOTS; SYMMETRY; WAVEGUIDES