Theory of ultrafast spatio-temporal dynamics in semiconductor quantum wells: Electronic wavepackets and near-field optics

A. Knorr, F. Steininger, B. Hanewinkel, S. Kuckenburg, P. Thomas, S. W. Koch

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The dynamics of electronic excitations in a semiconductor quantum well after excitation with spatially localized optical pulses (≤ 1 μm, 100 fs) is analyzed. Ballistic transport of electron-hole excitations as well as dissipative processes which induce a dynamic cross-over to diffusive motion are investigated. In the coherent limit, far-field excitation of quantum well excitons results in the excitation of radiative modes, whereas near-field excitation yields wavepackets composed of radiative and nonradiative modes.

Original languageEnglish (US)
Pages (from-to)139-151
Number of pages13
JournalPhysica Status Solidi (B) Basic Research
Volume206
Issue number1
DOIs
StatePublished - Mar 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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