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Il Nuovo Cimento D

, Volume 17, Issue 11–12, pp 1769–1774 | Cite as

Coherent exciton-photon dynamics in single, double, and quintuple quantum wells

  • D. Weber
  • J. Feldmann
  • E. O. Göbel
  • D. S. Citrin
  • K. Köhler
Article

Summary

We have studied experimentally the coherent exciton-photon dynamics in a single, a double, and a quintuple quantum well structure under resonant excitation. In pump and probe experiments we observe an initial fast decay of the exciton population. This initial decay depends on the number of quantum wells. The population decay is accompanied by a coherent light emission induced by the first-order polarization, the intensity of which increases quadratically with the quantum well number. Interference effects and electromagnetic coupling effects between polarizations located in distinct quantum wells probably play a crucial role in the superlinear coherent emission process.

PACS 42.50.Md

Optical transient phenomena (including quantum beats, dephasings and revivals, photon echoes, free induction decay, and optical nutation) 

PACS 71.35

Excitons and related phenomena (including electron-hole drops) 

PACS 73.20.Dx

Electron states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds) 

PACS 78.47

Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter 

PACS 01.30.Cc

Conference proceedings 

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References

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Copyright information

© Società Italiana di Fisica 1995

Authors and Affiliations

  • D. Weber
    • 1
    • 2
  • J. Feldmann
    • 1
    • 2
  • E. O. Göbel
    • 1
    • 3
    • 2
  • D. S. Citrin
    • 4
  • K. Köhler
    • 5
  1. 1.Department of PhysicsUniversity of MarburgMarburgGermany
  2. 2.Materials Sciences CenterUniversity of MarburgMarburgGermany
  3. 3.Physikalisch-Technische BundesanstaltBraunschweigGermany
  4. 4.Department of PhysicsWashington State UniversityPullmanUSA
  5. 5.Fraunhofer-Institut für Angewandte FestkörperphysikFreiburgGermany

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