@inproceedings{4dbc6d20215b4acca3f832d1dff5821f,
title = "Optical characterization of ultra-sensitive TES bolometers for SAFARI",
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 {\^I}1/4m. SAFARI requires extremely sensitive detectors (goal NEP ∼ 0.2 aW/{\^a}{\v s}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.",
keywords = "SAFARI, Transition Edge Sensor, cryogenic illuminator, far-infrared bolometer, optical testing, ultra-low background",
author = "Audley, {Michael D.} and {De Lange}, Gerhard and Gao, {Jian Rong} and Pourya Khosropanah and Philip Mauskopf and Dmitry Morozov and Trappe, {Neil A.} and Stephen Doherty and Stafford Withington",
year = "2014",
month = jan,
day = "1",
doi = "10.1117/12.2056037",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jonas Zmuidzinas and Holland, {Wayne S.}",
booktitle = "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII",
note = "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII ; Conference date: 24-06-2014 Through 27-06-2014",
}