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Detection of Bloch oscillations in a semiconductor superlattice by time-resolved terahertz spectroscopy and degenerate four-wave mixing.

Detektion von Blochoszillation in einem Halbleiterübergitter mittels zeitaufgelöster Terahertz Spektroskopie und entartetem 4-Wellen-Mischen
 

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Solid-State Electronics 37 (1994), Nr.4-6, S.1321-1326 : Abb.,Lit.
ISSN: 0038-1101
Englisch
Zeitschriftenaufsatz
Fraunhofer IAF ()
Quantentopf; quantum wells; time resolved photoluminescence; zeitaufgelöste Photolumineszenz

Abstract
We have studied the spatial dynamics of coherently excited wave packets of charge carriers in a semiconductor superlattice structure by both time-resolved THz spectroscopy and degenerate four-wave mixing. In the Wannier-Stark bias regime, we observe electron Bloch oscillations with a frequency that depends linearly on the electric bias field and can be tuned between a few hundred GHz and 5 THz.

: http://publica.fraunhofer.de/dokumente/PX-9387.html