Multicolor infrared photodetector

Details Multicolor infrared photodetector Multicolor infrared photodetector

1990-04-02

1991-05-07

Berman, Jack I.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

357 4, H01J 4014

Patent

active

050139185

ABSTRACT:
A multicolor infrared detection device comprising a number of doped quantum ell structural units. Each unit consists of a thick well and a thin well separated by a thin barrier. This arrangement produces strong coupling. Infrared radiation incident on the device gives rise to intersubband absorption. For each transition a photosignal results which allows the detection of a plurality of incident frequencies.

REFERENCES:
patent: Re32893 (1989-03-01), Miller
patent: 4796067 (1989-01-01), Shimizu et al.
patent: 4822992 (1989-04-01), Bar-Joseph et al.
patent: 4894526 (1990-01-01), Bethea et al.

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