Abstract
The resonantly excited secondary emission of light (RSE) after coherent optical excitation of a semiconductor is a valuable tool for the investigation of impulse relaxation due to resonant scattering processes.1 We use the observation of RSE from an Al0 35Ga0 65As/GaAs superlattice to investigate the coherent dynamics of Bloch oscillations after resonant scattering in a luminescence up-conversion setup. Their intraband coherence is shown to persist even after fast momentum scattering of the optically excited states.
© 1999 Optical Society of America
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