Quantum well infrared detector with grating enhancement

We have investigated theoretically enhanced quantum well IR detector. The field enhancement expressions are given by means of the perturbation method. The quantum efficiency and enhancement ratio have been obtained for a doped GaAs/AlGaAs quantum well structure at λ = 10 μm for different grating per...

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Bibliographic Details
Published in:Infrared physics 1991, Vol.32, p.53-56
Main Authors: Dafu, Cui, Zhenghao, Chen, Yueliang, Zhou, Huibin, Lu, Yuanlin, Xie, Guozhen, Yang
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
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Summary:We have investigated theoretically enhanced quantum well IR detector. The field enhancement expressions are given by means of the perturbation method. The quantum efficiency and enhancement ratio have been obtained for a doped GaAs/AlGaAs quantum well structure at λ = 10 μm for different grating periods. We explained why Goossen and Lyon only observed a small enhancement.
ISSN:0020-0891
DOI:10.1016/0020-0891(91)90095-W