Superconducting Hot Electron Bolometer Mixer for Middle IR Range

Author

Svechnikov, S.I. ; Finkel, M.I. ; Maslennikov, S.N. ; Vachtomin, Yu.B. ; Smirnov, K.V. ; Seleznev, V.A. ; Korotetskaya, Yu.P. ; Kaurova, N.S. ; Voronov, B.M. ; Gol´tsman, G.N.

Author_Institution

Moscow State Pedagogical Inst.

Volume

2

fYear

2006

fDate

Sept. 2006

Firstpage

686

Lastpage

687

Abstract

The developed directly lens coupled hot electron bolometer (HEB) mixer was based on 5 nm superconducting NbN deposited on GaAs substrate. The layout of the structure, including 30times20 mum² active area coupled with a 50 Ohm coplanar line, was patterned by photolithography. The responsivity of the mixer was measured in a direct detection mode in the 25-64 THz frequency range. The noise performance of the mixer and the directivity of the receiver were investigated in a heterodyne mode. A 10.6 mum wavelength CW CO₂ laser was utilized as a local oscillator

Keywords

bolometers; hot carriers; niobium compounds; photolithography; superconducting mixers; 25 to 64 THz; CW CO₂ laser; GaAs; NbN; direct detection mode; heterodyne mode; noise performance; oscillator; photolithography; superconducting hot electron bolometer mixer; Bolometers; Electrons; Frequency measurement; Gallium arsenide; Laser modes; Laser noise; Lenses; Lithography; Superconducting device noise; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Telecommunication Technology, 2006. CriMiCO '06. 16th International Crimean Conference

Conference_Location

Sevastopol, Crimea

Print_ISBN

966-7968-92-8

Electronic_ISBN

966-7968-92-8

Type

conf

DOI

10.1109/CRMICO.2006.256158

Filename

4023440