Theory of coherent phenomena in pump-probe excitation of semiconductor amplifiers

A. Girndt, A. Knorr, M. Hofmann, S. W. Koch

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The ultrafast pump-probe signal of a two band semiconductor amplifier is theoretically analysed using Maxwell-Semiconductor-Bloch equations. It is shown that the coupling of the pump and probe pulse via the probe gain modification significantly contributes to the signal for short delay times between pump and probe. The probe signal exhibits dominant oscillatory interference-like structures which conceal intensity dependent ultrafast features. Despite the semiconductor is described with a two band model which does not include free carrier absorption and two photon absorption the results are qualitatively similar to those of recent experiments.

Original languageEnglish (US)
Pages (from-to)2946-2954
Number of pages9
JournalJournal of Applied Physics
Volume78
Issue number5
DOIs
StatePublished - Dec 1 1995

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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