TY  - JOUR
AU  - Tretyakov, Ivan
AU  - Ryabchun, Sergey
AU  - Finkel, Matvey
AU  - Maslennikova, Anna
AU  - Kaurova, Natalia
AU  - Lobastova, Anastasia
AU  - Voronov, Boris
AU  - Gol'tsman, Gregory
PY  - 2011
DA  - 2011//
TI  - Low noise and wide bandwidth of NbN hot-electron bolometer mixers
T2  - Appl. Phys. Lett.
JO  - Appl. Phys. Lett.
SP  - 033507 (1 to 3)
VL  - 98
KW  - NbN HEB mixer
AB  - We report a record double sideband noise temperature of 600 K (5hν/kB) offered by a NbN hot-electron bolometer receiver at 2.5 THz. Allowing for standing wave effects, this value was found to be constant in the intermediate frequency range 1–7 GHz, which indicates that the mixer has an unprecedentedly large noise bandwidth in excess of 7 GHz. The insight into this is provided by gain bandwidth measurements performed at the superconducting transition. They show that the dependence of the bandwidth on the mixer length follows the model for an HEB mixer with diffusion and phonon cooling of the hot electrons.
UR  - https://doi.org/10.1063/1.3544050
DO  - 10.1063/1.3544050
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=638), last updated on Thu, 13 May 2021 23:38:00 -0500
ID  - Tretyakov_etal2011
ER  -