Abstract
In recent experiments, short-pulse excitation of undoped semiconductor double quantum wells1 and superlattices2 in an electric field has been used to form excitonic wavepackets from a coherent superposition of the underlying stationary states. We examine the wavepacket evolution, including the Coulomb interaction between the electrons and holes, as well as the effects of the terahertz radiation field resulting from the wavepacket oscillation. It has been suggested that in superlattices, the time evolution of these wavepackets represents Bloch oscillations. We investigate the evolution of such wavepackets as a function of the excitation parameters and discuss the degree to which Bloch oscillations can be achieved.
© 1993 Optical Society of America
PDF ArticleMore Like This
G. W. Bryant
QThH25 Quantum Electronics and Laser Science Conference (CLEO:FS) 1993
V.G. Lyssenko, J. Erland, J.M. Hvam, F. Löser, K. Leo, and K. Köhler
QMC3 Quantum Electronics and Laser Science Conference (CLEO:FS) 1999
E. O. Göbel
QThC.1 Quantum Optoelectronics (QOE) 1993