PT Journal
AU Gousev, YP
   Gol'tsman, GN
   Karasik, BS
   Gershenzon, EM
   Semenov, AD
   Barowski, HS
   Nebosis, RS
   Renk, KF
TI Quasioptical superconducting hot electron bolometer for submillmeter waves
SO Int. J. of Infrared and Millimeter Waves
JI Int. J. of Infrared and Millimeter Waves
PY 1996
BP 317
EP 331
VL 17
IS 2
DI 10.1007/BF02088154
DE NbN HEB
AB We report on a superconducting hot electron bolometer coupled to radiation via a broadband antenna. The bolometer, a structured NbN film, was patterned on a thin dielectric membrane between terminals of a gold slotline antenna. We investigated the response to submillimeter radiation (wave-lengths ∼ 0.1 mm to 0.7 mm) in the fundamental Gaussian mode. We found that the directivity of the antenna was constant within a factor of 2.5 through the whole experimental range. The noise equivalent power of the bolometer at 119 µm was ∼ 3 · 10−13 W/Hz1/2; a time constant of ∼ 160 ps was estimated.
ER