Optical investigation of Bloch oscillations in a semiconductor superlattice
- 15 September 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (11), 7252-7255
- https://doi.org/10.1103/physrevb.46.7252
Abstract
We report the study of optical dephazing of Wannier-Stark ladder excitations in a semiconductor superlattice by means of transient degenerate four-wave mixing. We observe pronounced modulations of the signal with a time period varying linearly with the electric field. The time period is found to equal the temporal periodicity of Bloch oscillations, in agreement with theory. In addition, we find that the dephazing time decreases with increasing localization of the Wannier-Stark states, which is attributed to carrier escape out of the lowest miniband.Keywords
This publication has 17 references indexed in Scilit:
- Coherent oscillations of a wave packet in a semiconductor double-quantum-well structurePhysical Review Letters, 1991
- Dynamics of band electrons in electric and magnetic fields: rigorous justification of the effective HamiltoniansReviews of Modern Physics, 1991
- Electro-optical multistability in GaAs/AlAs superlattices at room temperatureApplied Physics Letters, 1990
- Room-temperature electroabsorption and switching in a GaAs/AlGaAs superlatticeApplied Physics Letters, 1989
- Observation of the Wannier-Stark Quantization in a Semiconductor SuperlatticePhysical Review Letters, 1988
- Stark Localization in GaAs-GaAlAs Superlattices under an Electric FieldPhysical Review Letters, 1988
- Electric-Field-Induced Localization and Oscillatory Electro-optical Properties of Semiconductor SuperlatticesPhysical Review Letters, 1988
- Time evolution of Bloch electrons in a homogeneous electric fieldPhysical Review B, 1986
- Dynamics of Band Electrons in Electric and Magnetic FieldsReviews of Modern Physics, 1962
- ber die Quantenmechanik der Elektronen in KristallgitternThe European Physical Journal A, 1929