TY  - JOUR
AU  - Gousev, Yu P.
AU  - Semenov, A. D.
AU  - Pechen, E. V.
AU  - Varlashkin, A. V.
AU  - Nebosis, R. S.
AU  - Renk K. F
PY  - 1996
DA  - 1996//
TI  - Coupling of terahertz radiation to a high-Т(с) superconducting hot electron bolometer mixer
T2  - Appl. Phys. Lett.,
SP  - 691
EP  - 693
VL  - 69
AB  - We report  on efficient coupling of THz radiation to a high-T(c) superconducting hot electron bolometer that is suitable for heterodyne detection. Our quasioptical system consisted of a planar self-complementary spiral antenna on a dielectric substrate clamped to an extended hyperhemispherical lens. The antenna was integrated into a co-planar line for broadband intermediate frequency matching. Measurements in the homodyne regime at a frequency of 2.5 THz showed a radiation pattern with a beam width of 1° and a coupling efficiency of 0.1. We measured, at an intermediate frequency of 1.5 GHz, an output noise temperature of'160 K and estimated for the device, operated in the heterodyne regime, a system noise temperature of 30 000 K. We also discuss possibilities of significant improvement of the sensitivity.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=958), last updated on Fri, 03 Jul 2015 18:04:06 -0500
ID  - Gousev_etal1996
ER  -