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JETP Letters

, Volume 102, Issue 3, pp 161–166 | Cite as

Relaxation time mapping of single quantum dots and substrate background fluorescence

  • E. Pshenay-SeverinEmail author
  • I. Mukhin
  • S. Fasold
  • R. Geiss
  • A. Steinbrück
  • R. Grange
  • A. Chipouline
  • T. Pertsch
Condensed Matter
  • 76 Downloads

Abstract

We experimentally investigated the role of background signal in time resolved photoluminescence experiments with single quantum dots on substrates. We show that the background fluorescence signal from thin gold films fabricated by electron-beam evaporation and from Al2O3 layers fabricated by atomic layer deposition have to be taken into consideration in experiments on the single photon level. Though all investigated components can be distinguished by their photoluminescence decay rates, the presence of the background signal prevents the observation of photon antibunching from single quantum dots. Moreover, a single quantum dot acts as a hot spot enabling the plasmon supported fluorescence enhancement of gold.

Keywords

JETP Letter Gold Layer Strong Coupling Regime Thin Gold Film Instrument Response Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Inc. 2015

Authors and Affiliations

  • E. Pshenay-Severin
    • 1
    • 2
    Email author
  • I. Mukhin
    • 3
    • 4
  • S. Fasold
    • 1
  • R. Geiss
    • 1
  • A. Steinbrück
    • 1
  • R. Grange
    • 1
  • A. Chipouline
    • 1
  • T. Pertsch
    • 1
  1. 1.Institute of Applied Physics, Abbe Center of PhotonicsFriedrich-Schiller-Universität JenaJenaGermany
  2. 2.Nonlinear Physics Center, Research School of Physics and EngineeringAustralian National UniversityCanberraAustralia
  3. 3.St. Petersburg Academic UniversitySt. PetersburgRussia
  4. 4.St. Petersburg National Research University of Information Technologies, Mechanics and OpticsSt. PetersburgRussia

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