Superconducting Hot Electron Bolometer Mixer for Middle IR Range

Superconducting Hot Electron Bolometer Mixer for Middle IR Range

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 mum 2 active area coupled with a 50 Ohm coplanar line, was patterned by photolithography. The responsivity of the...

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Hauptverfasser: 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.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Bolometers
Electrons
Frequency measurement
Gallium arsenide
Laser modes
Laser noise
Lenses
Lithography
Superconducting device noise
Wavelength measurement
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Zusammenfassung: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 mum 2 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 CO 2 laser was utilized as a local oscillator
DOI:10.1109/CRMICO.2006.256158