Hotspot mixing: a new principle of heterodyne mixing in a superconducting hot-electron bolometer

Author

Floet, D.Wilms ; Miedema, E. ; Gao, J.R. ; Klapwijk, T.M.

Author_Institution

Dept. of Appl. Phys., Groningen Univ., Netherlands

fYear

1998

fDate

3-4 Sep 1998

Firstpage

9

Lastpage

12

Abstract

We present the hotspot mixing as a new principle of heterodyne mixing in a superconducting hot-electron bolometer. Applying DC and LO powers to a superconducting bridge generates a hotspot within the bridge. The size of the hotspot, and thus the resistance of the bridge, oscillates with the heating power at intermediate frequency. By solving heat-conducting equations, we can predict the mixer performances, such as the conversion efficiency, as a function of dc bias voltage, LO power, or the bath temperature

Keywords

bolometers; heterodyne detection; hot carriers; submillimetre wave mixers; superconducting microbridges; superconducting mixers; LO power; bath temperature; conversion efficiency; dc bias voltage; heat-conducting equations; heating power; heterodyne mixing; hotspot mixing; intermediate frequency; superconducting bridge; superconducting hot-electron bolometer; Bolometers; Bridge circuits; DC generators; Detectors; Electrons; Frequency; Heating; Mixers; Superconducting transition temperature; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Terahertz Electronics Proceedings, 1998. THz Ninety Eight. 1998 IEEE Sixth International Conference on

Conference_Location

Leeds

Print_ISBN

0-7803-4903-2

Type

conf

DOI

10.1109/THZ.1998.731651

Filename

731651