Impulsive excitation of cyclotron oscillations in a two-dimensional electron gas

J. K. Wahlstrand, P. Jacobs, J. M. Bao, R. Merlin, K. W. West, L. N. Pfeiffer

Research output: Contribution to journalConference articlepeer-review


We report on the impulsive excitation and control of intersubband and hybrid intersubband-cyclotron modes in a two-dimensional electron gas by ultrafast optical pulses. Pump-probe experiments were performed in the reflection geometry on a modulation-doped GaAs/Al xGa 1-xAs quantum well at 7 K. Using a pulse shaper to produce multiple excitation pulses, we demonstrate coherent control of charge-density intersubband modes. When a tilted magnetic field is applied, we observe oscillations due to hybrid intersubband-cyclotron modes. The features observed in the pump-probe experiments are consistent in frequency and selection rules with spontaneous Raman scattering data obtained from the same sample.

Original languageEnglish (US)
Pages (from-to)574-578
Number of pages5
JournalSolid State Communications
Issue number9-10
StatePublished - Sep 2005
Externally publishedYes
EventFundamental Optical and Quantum Effects in Condensed Matter -
Duration: Sep 9 2004Sep 10 2004

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


  • D. Cyclotron resonance
  • E. Inelastic scattering
  • E. Ultrafast spectroscopy


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