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Resonant cavity-enhanced (RCE) photodetectors

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6 Author(s)
Kishino, K. ; Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA ; Unlu, M.S. ; Jen-Inn Chyi ; Reed, J.
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The photosensitivity characteristics of resonant cavity-enhanced (RCE) photodetectors are investigated. The photodetectors were formed by integrating the active absorption region into a resonant cavity composed of top and bottom (buried) mirrors. A general expression for quantum efficiency for RCE photodetectors was derived taking the external losses into account. Drastic enhancement in quantum efficiency is demonstrated at resonant wavelengths for a high quality factor Q cavity with a very thin absorption layer. An improvement by a factor of four in the bandwidth-efficiency product for RCE p-i-n detectors is predicted. Molecular beam epitaxy grown RCE-heterojunction phototransistors (RCE-HPT) were fabricated and measured demonstrating good agreement between experiment and theory

Published in:

Quantum Electronics, IEEE Journal of  (Volume:27 ,  Issue: 8 )

Date of Publication:

Aug 1991

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