Excitonic wave packet dynamics in semiconductor photonic-crystal structures

B. Pasenow, M. Reichelt, T. Stroucken, T. Meier, S. W. Koch

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Significant aspects of the light-matter interaction can be strongly modified in suitably designed systems consisting of semiconductor nanostructures and dielectric photonic crystals. To analyze such effects, a microscopic theory is presented, which is capable of describing the optoelectronic properties of such hybrid systems via a self-consistent solution of the dynamics of the optical field and the photoexcitations of the material. The theory is applied to investigate the local excitonic resonances, which arise as a consequence of the modified Coulomb interaction in the vicinity of a structured dielectric medium. The excitation of a coherent superposition of the spatially inhomogeneous optical transitions induces an intricate wave packet dynamics. In the presence of dephasing and relaxation processes, the coherent oscillations are damped and the photoexcited carriers relax into spatially inhomogeneous quasi-equilibrium distributions.

Original languageEnglish (US)
Article number195321
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number19
DOIs
StatePublished - Dec 13 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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