PT Journal
AU Gol'tsman, GN
   Semenov, AD
   Gousev, YP
   Zorin, MA
   Gogidze, IG
   Gershenzon, EM
   Lang, PT
   Knott, WJ
   Renk, KF
TI Sensitive picosecond NbN detector for radiation from millimetre wavelengths to visible light
SO Supercond. Sci. Technol.
JI Supercond. Sci. Technol.
PY 1991
BP 453
EP 456
VL 4
IS 9
DI 10.1088/0953-2048/4/9/020
DE NbN HEB detectors
AB The authors report on the application of a broad-band NbN film detector which has high sensitivity and picosecond response time for detection of radiation from millimetre wavelengths to visible light. From a study of amplitude modulated radiation of backward-wave tubes and picosecond pulses from gas and solid state lasers at wavelengths between 2 mm and 0.53 mu m, they found a detectivity of 1010 W-1 cm Hz-1/2 and a response time of less than 50 ps at T=10 K. The characteristics were provided by using a 150 AA thick NbN film patterned into a structure of micron strips. According to the proposed detection mechanism, namely electron heating, they expect an intrinsic response time of approximately 20 ps at the same temperature.
ER