PT Unknown
AU Finkel, MI
   Maslennikov, SN
   Vachtomin, YB
   Svechnikov, SI
   Smirnov, KV
   Seleznev, VA
   Korotetskaya, YP
   Kaurova, NS
   Voronov, BM
   Gol'tsman, GN
TI Hot electron bolometer mixer for 20 - 40 THz frequency range
SE Proc. 16[super:th] Int. Symp. Space Terahertz Technol.
PY 2005
BP 393
EP 397
DE IR NbN HEB mixers
AB The developed HEB mixer was based on a 5 nm thick NbN film deposited on a GaAs substrate. The active area of the film was patterned as a 30×20 μm 2 strip and coupled with a 50 Ohm coplanar line deposited in situ. An extended hemispherical germanium lens was used to focus the LO radiation on the mixer. 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 μm wavelength CW CO 2 laser was utilized as a local oscillator.
PI Göteborg, Sweden
ER