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On optical gain mechanisms in a 2DEG photodetector
Conference proceeding

On optical gain mechanisms in a 2DEG photodetector

B Nabet, M.A Romero, A Cola, F Quaranta and M Cesareo
Proceedings of the 2001 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference. (Cat. No.01TH8568), v 1, pp 57-60
2001

Abstract

Electron mobility Electron optics Epitaxial layers HEMTs Heterojunctions Optical detectors Optical devices Optical modulation Photodetectors Photovoltaic systems
Discusses the gain mechanisms in an optical detector based on a modulation doped heterojunction. It is shown that, in this gate-less HEMT device, varying the density of the mobile electron gas produces large differences in optical responsivity. The observed behavior is explained on the basis of a internal variation of the Fermi level, similar to a photovoltaic gating effect.

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Web of Science research areas
Engineering, Electrical & Electronic
Optics
Physics, Applied
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