Grating enhanced quantum well detector

K. W. Goossen; S. A. Lyon

doi:10.1063/1.96434

Grating enhanced quantum well detector

K. W. Goossen, S. A. Lyon

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Abstract

An infrared detector based on the excitation of carriers out of a modulation-doped quantum well is theoretically investigated. The efficiency of the detector is increased by using a grating to enhance the fields in the well. Scattering effects are taken into account by designing the quantum well so that upon excitation carriers will escape in a short time compared to the time it takes to scatter back into the well. Despite this constraint, a quantum efficiency of 90% is shown to be possible for a GaAs-AlGaAs quantum well with a carrier density of 10¹² cm^-2.

Original language	English (US)
Pages (from-to)	1257-1259
Number of pages	3
Journal	Applied Physics Letters
Volume	47
Issue number	12
DOIs	https://doi.org/10.1063/1.96434
State	Published - 1985

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.96434

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title = "Grating enhanced quantum well detector",

abstract = "An infrared detector based on the excitation of carriers out of a modulation-doped quantum well is theoretically investigated. The efficiency of the detector is increased by using a grating to enhance the fields in the well. Scattering effects are taken into account by designing the quantum well so that upon excitation carriers will escape in a short time compared to the time it takes to scatter back into the well. Despite this constraint, a quantum efficiency of 90% is shown to be possible for a GaAs-AlGaAs quantum well with a carrier density of 1012 cm-2.",

author = "Goossen, {K. W.} and Lyon, {S. A.}",

year = "1985",

doi = "10.1063/1.96434",

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AU - Lyon, S. A.

PY - 1985

Y1 - 1985

N2 - An infrared detector based on the excitation of carriers out of a modulation-doped quantum well is theoretically investigated. The efficiency of the detector is increased by using a grating to enhance the fields in the well. Scattering effects are taken into account by designing the quantum well so that upon excitation carriers will escape in a short time compared to the time it takes to scatter back into the well. Despite this constraint, a quantum efficiency of 90% is shown to be possible for a GaAs-AlGaAs quantum well with a carrier density of 1012 cm-2.

AB - An infrared detector based on the excitation of carriers out of a modulation-doped quantum well is theoretically investigated. The efficiency of the detector is increased by using a grating to enhance the fields in the well. Scattering effects are taken into account by designing the quantum well so that upon excitation carriers will escape in a short time compared to the time it takes to scatter back into the well. Despite this constraint, a quantum efficiency of 90% is shown to be possible for a GaAs-AlGaAs quantum well with a carrier density of 1012 cm-2.

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

ER -

Grating enhanced quantum well detector

Abstract

All Science Journal Classification (ASJC) codes

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