Ultimate cold-electron bolometer for THz applications

Author

Kuzmin, Leonid

Author_Institution

Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Goteborg, Sweden

fYear

2004

fDate

27 Sept.-1 Oct. 2004

Firstpage

239

Lastpage

240

Abstract

Ultimate cold electron bolometer with strong electrothermal feedback by direct electron cooling of the absorber has been proposed. This concept is proposed to overcome the unavoidable contradiction of supersensitive detectors between supersensitivity and supersaturation due to background power load. The effective electron cooling can be treated as strong electrothermal feedback (ETF) similar to TES (transition edge sensor), an unavoidable dc heating for electrothermal feedback is replaced by deep electron cooling removing all incoming power from the absorber to the next stage and keeping minimum temperature. Noise properties (NEP) are considerably removed by decreasing the electron temperature. All incoming power is removed from supersensitive absorber to the next stage of readout system - SQUID.

Keywords

SQUIDs; bolometers; submillimetre wave detectors; superconducting device noise; SQUID; THz applications; background power load; cold electron bolometer; dc heating; deep electron cooling; direct electron cooling absorber; electron temperature; electrothermal feedback; noise properties; readout system; supersensitive absorber; supersensitive detectors; transition edge sensor; Bolometers; Cooling; Detectors; Electrons; Electrothermal effects; Feedback; Heating; SQUIDs; Temperature sensors; Thermal sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on

Print_ISBN

0-7803-8490-3

Type

conf

DOI

10.1109/ICIMW.2004.1422043

Filename

1422043