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1998
Journal Article
Title

Fano resonances in semiconductor superlattices

Other Title
Fano-Resonanzen in Halbleiterübergittern
Abstract
We report the first observation of Fano resonances in biased semiconductor superlattices: The excitonic Wannier-Stark ladder transitions show asymmetric absorption due to the coupling to the continua of lower transitions. In contrast to other known examples of Fano resonances, the Fano coupling can be continuously tuned in this system by changing the static field across the superlattice. The line shapes and their coupling dependence are in excellent agreement with theory. We also investigate the dephasing dynamics of the resonances and observe an increase in dephasing with increasing Fano coupling.
Author(s)
Holfeld, C.P.
Löser, F.
Sudzius, M.
Leo, K.
Whittaker, D.M.
Köhler, Klaus  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Journal
Physical review letters  
DOI
10.1103/PhysRevLett.81.874
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • III-V Halbleiter

  • III-V semiconductor

  • optical measurement

  • optische Messung

  • superlattice

  • Übergitter

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