TY  - JOUR
AU  - Miao, W.
AU  - Zhang, W.
AU  - Zhong, J. Q.
AU  - Shi, S. C.
AU  - Delorme, Y.
AU  - Lefevre, R.
AU  - Feret, A.
AU  - Vacelet, T.
PY  - 2014
DA  - 2014//
TI  - Non-uniform absorption of terahertz radiation on superconducting hot electron bolometer microbridges
T2  - <ef><bf><bc>Appl. Phys. Lett.
JO  - Appl. Phys. Lett.
SP  - 052605(1
EP  - 4)
VL  - 104
KW  - NbN HEB mixers
KW  - local oscillator power
KW  - RF nonuniform absorption
AB  - We interpret the experimental observation of a frequency-dependence of superconducting hot electron bolometer (HEB) mixers by taking into account the non-uniform absorption of the terahertz radiation on the superconducting HEB microbridge. The radiation absorption is assumed to be proportional to the local surface resistance of the HEB microbridge, which is computed using the Mattis-Bardeen theory. With this assumption the dc and mixing characteristics of a superconducting niobium-nitride (NbN) HEB device have been modeled at frequencies below and above the equilibrium gap frequency of the NbN film.
UR  - http://dx.doi.org/10.1063/1.4864763
UR  - https://doi.org/10.1063/1.4864763
DO  - 10.1063/1.4864763
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=935), last updated on Thu, 12 Feb 2015 15:57:35 -0600
ID  - Miao_etal2014
ER  -