Distributed TES Model for Designing Low Noise Bolometers Approaching SAFARI Instrument Requirements
| Autor: | R. A. Hijmering, Luciano Gottardi, Pourya Khosropanah, H. F. C. Hoevers, P. A. J. de Korte, M. P. Bruijn, Marcel L. Ridder, M. A. Lindeman, J. van der Kuur, J. R. Gao |
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| Rok vydání: | 2012 |
| Předmět: |
Physics
business.industry Detector Bolometer transition edge sensor · TES · far infrared spectrometer · submm spectrometer · SiN membrane · cryogenic detectors · THz detectors Imaging spectrometer Spica Condensed Matter Physics Atomic and Molecular Physics and Optics Low noise law.invention Telescope Optics Materials Science(all) law Thermal General Materials Science Transition edge sensor business |
| Zdroj: | Journal of low temperature physics, 167(Apr)2012 |
| ISSN: | 1573-7357 0022-2291 |
| DOI: | 10.1007/s10909-012-0550-6 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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