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Ultrafast Heterobarrier Metal-Semiconductor-Metal Photodetectors

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Abstract

We describe a heterostructure metal-semiconductor-metal photodetector with subpicosecond response time. In this diode, the intrinsic speed is enhanced by ultrafast real- space transfer of the photogenerated charge carriers from the light-absorbing layer to a reservoir layer underneath.

© 1993 Optical Society of America

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