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

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

188

Lastpage

191

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2089585

Filename

5634093