IR and THz Bolometric Detectors with Absorbers Characterized by Frequency Dispersion of Conductivity

Application of thin metal absorbers allows one to significantly increase the absorption coefficient and sensitivity of matrix THz microbolometric detectors. It is shown that absorbers characterized by frequency dispersion of conductivity, in contrast to conventional nondispersive absorbers, can prov...

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Bibliographic Details
Published in:Technical physics 2019, Vol.64 (1), p.127-132
Main Author: Dem’yanenko, M. A.
Format: Article
Language:English
Subjects:
Absorbers
Absorptivity
Bolometers
Classical and Continuum Physics
Detectors
Dispersion
Experimental Instruments and Technique
Physics
Physics and Astronomy
Sensitivity
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Summary:Application of thin metal absorbers allows one to significantly increase the absorption coefficient and sensitivity of matrix THz microbolometric detectors. It is shown that absorbers characterized by frequency dispersion of conductivity, in contrast to conventional nondispersive absorbers, can provide almost total IR absorption retaining high sensitivity in the THz range.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784219010080