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Optical characterization of ultra-sensitive TES bolometers for SAFARI

Audley, Michael D., de Lange, Gerhard, Gao, Jian-Rong, Khosropanah, Pourya, Mauskopf, Philip Daniel, Morozov, Dmitry, Trappe, Neil A., Doherty, Stephen and Withington, Stafford 2014. Optical characterization of ultra-sensitive TES bolometers for SAFARI. Presented at: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, Montreal, Quebec, Canada, 22 June 2014. Published in: Holland, Wayne S. and Zmuidzinas, Jonas eds. Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII. The International Society for Optical Engineering, 91530E. 10.1117/12.2056037

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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. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: The International Society for Optical Engineering
ISSN: 0277-786X
Last Modified: 21 Nov 2017 21:14
URI: http://orca.cf.ac.uk/id/eprint/69783

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