Title :
IF gain bandwidth of membrane-based NbN hot electron bolometers for SHAHIRA
Author :
Baubert, J. ; Salez, M. ; Merkel, H. ; Pons, P. ; Cherednichenko, S. ; Lecomte, B. ; Drakinsky, V. ; Goltsman, G. ; Leone, B.
fDate :
6/1/2005 12:00:00 AM
Abstract :
SHAHIRA (Submm Heterodyne Array for HIgh-speed 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 μm 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.
Keywords :
bolometers; niobium compounds; silicon compounds; submillimetre wave detectors; superconducting particle detectors; 1 micron; 2.5 THz; 2.7 THz; 4.7 THz; IF gain bandwidth; NbN; SHAHIRA; Si3N4; SiO2; highspeed radio astronomy; intermediate frequency gain bandwidth; membrane-based hot electron bolometers; quasi-optic design; stress-less membranes; submm heterodyne array; Atomic measurements; Bandwidth; Biomembranes; Bolometers; Electrons; Frequency; High definition video; Hydrogen; Observatories; Radio astronomy; Gain IF bandwidth; NbN HEB; membrane;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849890
