Abstract

Optically bistable devices may be physically pixelated, and this may reduce cross talk or power requirements. When the bistability is of electronic origin, the rate of recombination of carriers at the surface is of great importance. We show how the surface recombination affects the speed of the element, first for a one-dimensional model and then for a cylindrical rod pixel with recombination at the curved surface. In some cases pixelated and unpixelated elements operate at the same speed, which indicates that the surface recombination in the former is equivalent to the diffusive loss from the latter.

© 1990 Optical Society of America

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