Abstract
Electric-field-induced optical effects have been studied in two-step and inverse parabolic quantum wells grown by molecular beam epitaxy. The inverse parabolic well was grown by digital and analog compositional grading techniques. Both types of wells had much larger Stark shifts than the conventional square well. This is an effect of the special shape of the well allowing local-to-global state transitions. Observed deviations from calculated results for the analog inverse parabolic well are attributed to fluctuation in quantum well parameters.
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