TY  - JOUR
AU  - Baselmans, J. J. A.
AU  - Baryshev, A.
AU  - Reker, S. F.
AU  - Hajenius, M.
AU  - Gao, J. R.
AU  - Klapwijk, T. M.
AU  - Vahtomin, Yu
AU  - Maslennikov, S.
AU  - Antipov, S.
AU  - Voronov, B.
AU  - Gol'tsman, G.
PY  - 2005
DA  - 2005//
TI  - Direct detection effect in small volume hot electron bolometer mixers
T2  - Appl. Phys. Lett.
JO  - Appl. Phys. Lett.
SP  - 163503 (1 to 3)
VL  - 86
IS  - 16
KW  - HEB
KW  - mixer
KW  - direct detection effect
AB  - We measure the direct detection effect in a small volume (0.15μm×1μm×3.5nm)(0.15μm×1μm×3.5nm) quasioptical NbN phonon cooled hot electronbolometermixer at 1.6THz1.6THz. We find that the small signal sensitivity of the receiver is underestimated by 35% due to the direct detection effect and that the optimal operating point is shifted to higher bias voltages when using calibration loads of 300K300K and 77K77K. Using a 200GHz200GHzbandpass filter at 4.2K4.2K the direct detection effect virtually disappears. This has important implications for the calibration procedure of these receivers in real telescope systems.
UR  - https://doi.org/10.1063/1.1887812
DO  - 10.1063/1.1887812
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=377), last updated on Mon, 17 May 2021 20:25:14 -0500
ID  - Baselmans_etal2005
ER  -