Ultrafast spectroscopy of a two-dimensional electron gas

M. Woerner, T. Shih, C. W. Luo, K. Reimann, T. Elsaesser, I. Waldmüller, A. Knorr, R. Hey, K. H. Ploog

Research output: Contribution to journalConference articlepeer-review


The nonlinear transmission measurements of the intersubband resonance on n-type modulation-doped GaAS/AlGaAs multiple quantum wells using ultrafast spectroscopy were presented. The sample multiple quantum wells were grown by molecular beam epitaxy and were differed in their electron density. For the measurements, optical Bloch equations were solved for all quantum wells since the electric field acting on a given quantum well was modified by the response from all quantum wells. It was observed that the nonlinear transmission was first decreased with increasing amplitude, reached a minimum, and then increased again.

Original languageEnglish (US)
Pages (from-to)451-452
Number of pages2
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
StatePublished - 2004
Externally publishedYes
Event2004 IEEE LEOS Annual Meeting Conference Proceedings, LEOS 2004 - Rio Grande, Puerto Rico
Duration: Nov 7 2004Nov 11 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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