Oscillatory electron transport in GaAs/AlGaAs Superlattices

W. Fischler; R. Bratschitsch; R. A. Höpfel; G. Strasser; K. Unterrainer

European Quantum Electronics Conference
Technical Digest Series (Optica Publishing Group, 1998),
paper QWC66

Oscillatory electron transport in GaAs/AlGaAs Superlattices

W. Fischler, R. Bratschitsch, R. A. Höpfel, G. Strasser, and K. Unterrainer

European Quantum Electronics Conference 1998

Glasgow, Scotland United Kingdom
14–18 September 1998
ISBN:

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Poster Session (QWC)

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W. Fischler, R. Bratschitsch, R. A. Höpfel, G. Strasser, and K. Unterrainer, "Oscillatory electron transport in GaAs/AlGaAs Superlattices," in European Quantum Electronics Conference, Technical Digest Series (Optica Publishing Group, 1998), paper QWC66.

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Abstract

Optically excited electrons in the miniband of a GaAs/Al_0.3Gao_0.7As-superlattice can undergo coherent plasma oscillations. The oscillations are driven by the ultrafast screening of the surface space charge field by the photoexcited electrons. We use standard pump-probe techniques in our experiments to measure alterations in the sample reflectivity.

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