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Optical study of Bloch oscillations in superlattices

Optische Untersuchung von Bloch-Oszillationen in Übergittern
 

Scheffler, M.; Zimmermann, R.:
23rd International Conference on the Physics of Semiconductors 1996. Vol. 3
Singapore: World Scientific, 1996
ISBN: 981-02-2777-9
S.1779-1782 : Ill.
International Conference on the Physics of Semiconductors <23, 1996, Berlin>
Englisch
Konferenzbeitrag
Fraunhofer IAF ()
heterostructure; Heterostruktur; III-V Halbleiter; III-V semiconductors; time resolved measurement; zeitaufgelöste Messung

Abstract
We present a comparative study of Bloch oscillations in InGaAsP/InGaAsP and GaAs/AlGaAs superlattices by different optical techniques. The visibility of Bloch oscillations in InGaAsP/InGaAsP is realized by nonlinear absorption change based on the superposition of electronic wavefunctions in Wannier-Stark (WS) states. The wavefunction coupling of WS states and a strongly localized boundary well state is observed in a specific InGaAsP/InGaAsP sample, and the results are compared with the data obtained in a typical GaAs/AlGaAs superlattice.

: http://publica.fraunhofer.de/dokumente/PX-27374.html