Article

Applied Physics A

, Volume 78, Issue 4, pp 435-440

First online:

Nonlinear terahertz spectroscopy of semiconductor nanostructures

  • C. LuoAffiliated withDepartment of Electrophysics, National Chiao Tung University
  • , K. ReimannAffiliated withMax-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie
  • , M. WoernerAffiliated withMax-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie
  • , T. ElsaesserAffiliated withMax-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie Email author 

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Abstract

Nonlinear frequency conversion and electro-optic sampling allow for the generation and phase-resolved characterization of few-cycle pulses in the frequency range up to 50 THz. Electric field transients with amplitudes of up to several MV/cm are applied to study coherent nonlinear excitations of low-dimensional semiconductors. We report the first observation of Rabi oscillations on intersubband transitions of electrons in GaAs/AlGaAs quantum wells. Frequency and phase of such oscillations are controlled in the 0.3- to 2.5-THz range via the strength and shape of the mid-infrared driving pulse.