IF Gain Bandwidth of membrane-based NbN Hot Electron Bolometers for SHAHIRA
Artikel i vetenskaplig tidskrift, 2005
SHAHIRA (Submm Heterodyne Array for HIghspeed
Radio Astronomy) is a project supported by the European
Space Agency (ESA) and is designed to fly on the SOFIA observatory.
A quasi-optic design has been chosen for 2.5/2.7 THz and
4.7 THz, for hydroxyde radical OH, deuterated hydrogen HD and
neutral atomic oxygen OI lines observations. Hot electron bolometers
(HEBs) have been processed on 1 um thick SiO2 Si3N4
stress-less membranes. In this paper we analyse the intermediate
frequency (IF) gain bandwidth from the theoretical point of view,
and compare it to measurements.