Femtosecond transient-grating experiments in quantum wells
- Schmitt-Rink, S.
- Müller, J.F.
- Damen, T.C.
- Ganser, P.
- Göbel, E.O.
- Köhler, K.
- Leo, K.
- Schäfer, W.
- Shah, J.
DOIAbstract
Using degenerate four-wave mixing (DFWM) with subpicosecond timeresolution, we demonstrate the following phenomena: (I) a novel coherent interaction of excitonic polarizations and (II) quantum beats of excitons in quantum wells due to interference of light-hole (lh) and heavy-hole (hh) excitons or hh excitons of different confinement
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