Title :
Ultrasensitive TES Bolometers for Space-Based FIR Astronomy
Author :
Morozov, D. ; Mauskopf, P.D. ; Ade, P. ; Ridder, M. ; Khosropanah, P. ; Bruijn, M. ; van der Kuur, J. ; Hoevers, H. ; Gao, J.R. ; Griffin, D.
Author_Institution :
Cardiff Univ., Cardiff, UK
fDate :
6/1/2011 12:00:00 AM
Abstract :
Results of study optical performance of single pixel transition edge sensor (TES) bolometer presented at wavelength band 30-60 μm are presented. FIR radiation is coupled into a multimode horn with entrance aperture of 450 μm, length 4.5 mm and exit aperture of 45 μm , which feeds a metal integrating cavity containing the detector. The radiation band is defined by a pair of lowpass and highpass mesh filters in front of the horn. Here we present measurements of optical noise equivalent power (NEP), optical efficiency, dynamic range and time constant. The results show that measured TES detectors are close to meeting the requirement of the “Band S” of SAFARI FTS imaging instrument on the SPICA mission.
Keywords :
aerospace instrumentation; astronomical telescopes; bolometers; infrared astronomy; FIR radiation; NEP; SAFARI FTS imaging instrument; SPICA mission; TES detectors; band S; highpass mesh filters; multimode horn; optical efficiency; optical noise equivalent power; radiation band; single pixel transition edge sensor; space-based FIR astronomy; time constant; ultrasensitive TES bolometer; wavelength 30 mum to 60 mum; wavelength 450 mum; Detectors; Noise; Optical detectors; Optical saturation; Optical variables measurement; SQUIDs; Temperature measurement; ${rm Si}_{x}{rm N}_{y}$ thermal transport; Far-IR detector; transition edge sensor;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2089585
