Abstract

A functionally all-optical bistability was obtained for a novel p-i-p-i-n device, in which the intrinsic region between the p and n regions contains GaAs/AlAs asymmetric coupled quantum wells and an intrinsic AlAs layer is embedded in p-AlGaAs. The typical input power density required for the bistable operation was as low as ~20 mW/cm2 at 77 K The result, which seems to be attractive for application to two-dimensional data processing, is interpreted in terms of a response of a well-defined asymmetric coupled-quantum-well p-i-n photodiode with an inner feedback region.

© 1993 Optical Society of America

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