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Proceedings Paper

Optical characterization of ultra-sensitive TES bolometers for SAFARI
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Paper Abstract

We have characterized the optical response of prototype detectors for SAFARI, the far-infrared imaging spectrometer for the SPICA satellite. SAFARI's three bolometer arrays will image a 2’×2’ field of view with spectral information over the wavelength range 34—210 μm. SAFARI requires extremely sensitive detectors (goal NEP ~ 0.2 aW/√Hz), with correspondingly low saturation powers (~5 fW), to take advantage of SPICA's cooled optics. We have constructed an ultra-low background optical test facility containing an internal cold black-body illuminator and have recently added an internal hot black-body source and a light-pipe for external illumination. We illustrate the performance of the test facility with results including spectral-response measurements. Based on an improved understanding of the optical throughput of the test facility we find an optical efficiency of 60% for prototype SAFARI detectors.

Paper Details

Date Published: 23 July 2014
PDF: 9 pages
Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91530E (23 July 2014); doi: 10.1117/12.2056037
Show Author Affiliations
Michael D. Audley, SRON Netherlands Institute for Space Research (Netherlands)
Gerhard de Lange, SRON Netherlands Institute for Space Research (Netherlands)
Jian-Rong Gao, SRON Netherlands Institute for Space Research (Netherlands)
Delft Univ. of Technology (Netherlands)
Pourya Khosropanah, SRON Netherlands Institute for Space Research (Netherlands)
Philip D. Mauskopf, Arizona State Univ. (United States)
Cardiff Univ. (United Kingdom)
Dmitry Morozov, Cardiff Univ. (United Kingdom)
Neil A. Trappe, National Univ. of Ireland, Maynooth (Ireland)
Stephen Doherty, National Univ. of Ireland, Maynooth (Ireland)
Stafford Withington, Cavendish Lab, Univ. of Cambridge (United Kingdom)


Published in SPIE Proceedings Vol. 9153:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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