Abstract

Strained quantum wells fabricated from the ternary alloy InGaAs and all-binary InAs/GaAs superlattices are currently of interest for potential use as all-optical switches and modulators. It is possible that some enhancement of the optical nonlinearities may be obtained by placing the quantum wells in a hetero nipi structure, thereby-exploiting the Stark shift of the excitonic peaks rather than excitonic saturation.

© 1991 Optical Society of America

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