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Nanoholes in Silicon Bolster Photodetector Speed, Efficiently

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A photodetector that could move more data at a lower cost has been built by propagating photons through nanoholes in a silicon wafer. The detector uses tapered holes to divert photons sideways, preserving both the speed of thin-layer silicon and the efficiency of a thicker layer. Photodetectors for optical to electronic signal conversion usually make use of efficient, but expensive materials other than silicon. A new approach uses tapered holes in silicon to trap photons and send them sideways through a silicon wafer, boosting efficiency. The approach allows high-efficiency, high-speed...Read full article

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