Long-wavelength infrared detection in a Kastalsky-type superlattice structure

The first successful demonstration of long-wavelength infrared (LWIR) detection with a Kastalsky-type AlGaAs/GaAs superlattice structure is reported. The experimental response band of the detector is centered near 10 microns in very good agreement with the theoretical response band provided that ele...

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Bibliographic Details
Published in:Applied physics letters 1990-07, Vol.57 (5), p.503-505
Main Authors: Byungsung, O., Choe, J.-W., Francombe, M. H., Bandara, K. M. S. V., Coon, D. D.
Format: Article
Language:English
Subjects:
Bolometer
infrared, submillimeter wave, microwave and radiowave receivers and detectors
Exact sciences and technology
Infrared, submillimeter wave, microwave and radiowave instruments, equipment and techniques
Instrumentation And Photography
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Physics
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Summary:The first successful demonstration of long-wavelength infrared (LWIR) detection with a Kastalsky-type AlGaAs/GaAs superlattice structure is reported. The experimental response band of the detector is centered near 10 microns in very good agreement with the theoretical response band provided that electron-electron interactions are taken into account. The detector operates at significantly lower bias voltage than photoconductive multiple quantum well LWIR detectors. This could lead to important advantages in applications to photovoltaic detector arrays. The response at 83 K is about 50 percent of the response at 24 K.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.103634