Grating enhanced quantum well detector

K. W. Goossen, S. A. Lyon

Research output: Contribution to journalArticlepeer-review

94 Scopus citations


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 languageEnglish (US)
Pages (from-to)1257-1259
Number of pages3
JournalApplied Physics Letters
Issue number12
StatePublished - 1985

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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