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Observation of Bloch oscillations in a semiconductor superlattice

Beobachtung von Bloch-Oszillationen in einem Halbleiter-Übergitter
 

Optical Society of America -OSA-, Washington/D.C.:
OSA Proceedings on Ultrafast Electronics and Optoelectronics. Vol.14
Washington/D.C., 1993 (OSA Proceedings on Ultrafast Electronics and Optoelectronics 14)
S.142-146 : Abb.,Lit.
Englisch
Aufsatz in Buch
Fraunhofer IAF ()
heterostructure; Heterostruktur; III-V Halbleiter; III-V semiconductors; superlattice; time resolved photoluminescence; Übergitter; zeitaufgelöste Photolumineszenz

Abstract
We investigate the polarization decay in biased superlattices with transient degenerate four-wave mixing. The signals have a strong periodic modulation in the field regime where the cw optical spectra show the transitions of a Wannier-Stark ladder. The period of the oscillations is in excellent agreement with Bloch oscillation theory. The oscillation period can be tuned over a large range by varying the electric bias field in the superlattice.

: http://publica.fraunhofer.de/dokumente/PX-26908.html