Distributed TES model for designing low noise bolometers approaching SAFARI instrument requirements

Khosropanah, P.; Hijmering, R.A.; Ridder, M.; Lindeman, M.A.; Gottardi, L.; Bruijn, M.; Van der Kuur, J.; de Korte, P.A.J.; Gao, J.R.; Hoevers, H.

doi:doi:10.1007/s10909-012-0550-6

Distributed TES model for designing low noise bolometers approaching SAFARI instrument requirements

Title

Distributed TES model for designing low noise bolometers approaching SAFARI instrument requirements

Author

Khosropanah, P.
Hijmering, R.A.
Ridder, M.
Lindeman, M.A.
Gottardi, L.
Bruijn, M.
Van der Kuur, J.
de Korte, P.A.J.
Gao, J.R.
Hoevers, H.

Faculty

Applied Sciences

Department

Kavli Institute of NanoScience

Date

2012-01-27

Abstract

Transition edge sensors (TES) are the chosen detector technology for the SAFARI imaging spectrometer on the SPICA telescope. The TES are required to have an NEP of 2–3 × 10?19 W/? Hz to take full advantage of the cooled mirror. SRON has developed TiAu TES bolometers for the short wavelength band (30–60 ?m). The TES are on SiN membranes, in which long and narrow legs act as thermal links between the TES and the bath. We present a distributed model that accounts for the heat conductance and the heat capacity in the long legs that provides a guideline for designing low noise detectors. We report our latest results that include a measured dark NEP of 4.2×10?19 W/? Hz and a saturation power of about 10 fW.

Subject

transition edge sensor · TES · far infrared spectrometer · submm spectrometer · SiN membrane · cryogenic detectors · THz detectors

To reference this document use:

http://resolver.tudelft.nl/uuid:6180ffe7-7560-4829-a838-5da86036b20d

DOI

https://doi.org/10.1007/s10909-012-0550-6

Publisher

Springer

ISSN

0022-2291

Source

http://www.springerlink.com/content/r340777654641872/