Electro-optical multistability in GaAs/AlAs superlattices at room temperature
- 12 February 1990
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 56 (7), 605-607
- https://doi.org/10.1063/1.102711
Abstract
We have studied the optical absorption properties of a GaAs/AlAs short-period superlattice at room temperature in an electric field perpendicular to the layers. Several pronounced optical transitions related to Wannier–Stark localization are observed indicating a coherence length of at least five superlattice periods. These transitions produce multiple regions of negative differential photoconductivity which are used to realize a multistable self-electro-optic effect device.Keywords
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