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High-Speed Resonant Cavity Enhanced Photodiodes with Near-Unity Quantum Efficiency

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Abstract

We designed, fabricated and characterized AlxGa1−xAs/GaAs p-i-n resonant cavity enhanced (RCE) photodetectors with near-unity quantum efficiency. The peak wavelength is in the 780-830 nm region and post-process adjustable by recessing the top surface. Transit time limited bandwidth for these devices is in excess of 50 GHz. Possible applications of these detectors include quantum optical experiments that use pulsed sources and short-haul high speed communications.

© 1999 Optical Society of America

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