Title :
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.
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;
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
DOI :
10.1109/CRMICO.2006.256158
