Multi-color coincident infrared detector

Details Multi-color coincident infrared detector Multi-color coincident infrared detector

1990-05-04

1991-10-22

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250339, 25037006, G01J 520, G01J 328

Patent

active

050597868

ABSTRACT:
Radiation absorbing layers of epitaxially grown, photovoltaic materials are eposited in stacked relation on a substrate in alignment with a coincident axis of input radiation impinging on a common optically active surface area of a detector device formed by the stacked layers. Semi-insulating layers space the radiation absorbing layers to electrically separate the signal outputs respectively produced in response to impinging radiation limited to separate and distinct wavelengths within a common spectral range as a result of the interrelationships between bandgap energy properties of the layer materials.

REFERENCES:
patent: 3478214 (1969-11-01), Dillman
patent: 4442446 (1984-04-01), Bouley et al.
patent: 4626322 (1986-12-01), Switzer
patent: 4948976 (1990-08-01), Baliga et al.

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