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Conferences > QELS > 1993 > QPD > QPD22
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1993),
  • paper QPD22

Dynamics of carrier-induced screening of the piezo-electric effect in CdSe/CdS superlattices

W. Langbein, H. Kalt, M. Hetterich, M. Grün, and C. Klingshirn

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Abstract

Piezo-electric fields in strained-layer superlattices (SLs) evoke strong modifications of the bandstructure. These effects are especially pronounced in polar materials with a hexagonal lattice structure such as Wurtzite-type CdSe and CdS. The separation of optically generated electrons and holes into adjacent layers of type-II SLs screens the piezo-electric fields. [1] The resulting large optical nonlinearites are most promising for the application in optical modulators.

© 1993 Optical Society of America

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