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Optical bistability was observed in a multiquantum well microcavity, with a 500 W/cm2 intensity threshold and a 10:1 contrast. The device design enhances the cavity finese (here up to 250), by increasing the number of layers in the Bragg mirror stacks, and simultaneously reducing the active layer thickness (here 3λ/2, i.e. 360 nm).
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Oudar et al. (1992) studied this question.
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