Non-Lorentzian homogeneous lineshape in semiconductor quantum dots

W. Langbein, P. Borri, S. Schneider, B. Patton, U. Woggon, R. L. Sellin, D. Ouyong, D. Bimberg, K. Leonardi, D. Hommel

Research output: Contribution to conferencePaper


The homogeneous broadening in InGaAs/GaAs and in CdSe/ZnSe quantum dots (QDs) was studied by measuring both decoherence times and lineshapes. Time-resolved four-wave mixing (FWM) on an inhomogeneously broadened dot ensemble, and single-dot photoluminescence (PL) spectroscopy was used. As a result, a nontrivial lineshape stimulating a novel understanding of the decoherence processes in these systems was achieved.

Original languageEnglish
Number of pages1
Publication statusPublished - 1 Jan 2002
EventQuantum Electronics and Laser Science (QELS) 2002 - Long Beach, CA, United States
Duration: 19 May 200224 May 2002


ConferenceQuantum Electronics and Laser Science (QELS) 2002
CountryUnited States
CityLong Beach, CA


  • Semiconductor quantum dots
  • electron transitions
  • four wave mixing
  • Fourier transforms
  • ground state
  • monolayers
  • phonons
  • photoluminescence
  • semiconducting cadmium compounds
  • single dot photoluminescence spectroscopy

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