PT Unknown
AU Svechnikov, SI
   Finkel, MI
   Maslennikov, SN
   Vachtomin, YB
   Smirnov, KV
   Seleznev, VA
   Korotetskaya, YP
   Kaurova, NS
   Voronov, BM
   Gol’tsman, GN
TI Superconducting hot electron bolometer mixer for middle IR range
SE Proc. 16th Int. Crimean Microwave and Telecommunication Technology
PY 2006
BP 686
EP 687
VL 2
DI 10.1109/CRMICO.2006.256158
DE IR NbN HEB mixer; detector; GaAs substrate
AB 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 30x20 mcm^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 CO2 laser was utilized as a local oscillator.
ER