Amplitude Decay and Instantaneous Frequency Dynamics of Excitonic Polarization in Semiconductor Quantum Wells

  • J.-Y. Bigot
  • M.-A. Mycek
  • S. Weiss
  • R. G. Ulbrich
  • D. S. Chemla
Part of the NATO ASI Series book series (NSSB, volume 330)

Abstract

Coherent light scattering is an ideal tool to investigate the microscopic interactions that take place in various diluted or condensed phase systems1. It is of particular interest in semiconductors where the Coulomb interaction between electrons and holes brings new features in the dynamics of the polarization established by ultrashort optical pulses2. Due to this Coulomb coupling the coherent emission observed in different wave-mixing geometries behaves in a non-trivial fashion. The usual description of the material relaxation with a simple transverse time T 2, as is done for atomic-like systems3, is no longer sufficient. Although the underlying physics is more complex, one may picture these different regimes by analogy with oscillators: the exponential T 2 behavior corresponds to a damped harmonic oscillator, while the Coulomb interacting system leads to a non-exponential damping, as with nonlinear coupled oscillators.

Keywords

Instantaneous Frequency Quantum Beat Nonlinear Schrodinger Equation Quantum Well Structure Optical Cycle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • J.-Y. Bigot
    • 1
  • M.-A. Mycek
    • 2
    • 3
  • S. Weiss
    • 2
    • 3
  • R. G. Ulbrich
    • 4
  • D. S. Chemla
    • 2
    • 3
  1. 1.Unité Mixte 380046 CNRS — ULP — EHICSInstitut de Physique et Chimie des Matériaux de StrasbourgStrasbourg CedexFrance
  2. 2.Physics DepartmentUniversity of California at BerkeleyBerkeleyUSA
  3. 3.Materials Sciences DivisionLawrence Berkeley LaboratoryBerkeleyUSA
  4. 4.Department of PhysicsUniversity of GöttingenGöttingenGermany

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