Highly sensitive polarimetric camera (B-BOP) for the SPICA mission

The Space Infrared telescope for Cosmology and Astrophysics (SPICA) mission has just been selected by the European Space Agency as one of the three candidate missions to be further studied for the medium size mission M5. B-BOP, formerly named POL, is one of the three scientific instruments of SPICA...

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Bibliographic Details
Published in:Applied optics (2004) 2019-01, Vol.58 (2), p.398
Main Authors: Adami, Obaïd-Allah, Rodriguez, Louis, Poglitsch, Albrecht, Bounissou, Sophie, Reveret, Vincent, Aliane, Abdelkader, Goudon, Valérie, Dussopt, Laurent
Format: Article
Language:English
Subjects:
Astrophysics
Computer simulation
Cosmology
Electromagnetic absorption
Engineering Sciences
Field of view
Infrared telescopes
Laboratory equipment
Low noise
Missions
Optics
Photonic
Physics
Polarimetry
Spectral bands
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Summary:The Space Infrared telescope for Cosmology and Astrophysics (SPICA) mission has just been selected by the European Space Agency as one of the three candidate missions to be further studied for the medium size mission M5. B-BOP, formerly named POL, is one of the three scientific instruments of SPICA which aims, among other scientific goals, to map the galactic filamentary structures and their associated magnetic fields. With a novel interlaced-shaped design, B-BOP will contain 1344 pixels, operating within a temperature range of 50-100 mK, covering a 2.6 arcmin field of view, and delivering imaging polarimetry in three spectral bands: 100 μm, 200 μm, and 350 μm simultaneously. In this paper, we investigate by numerical simulations the mechanical, electromagnetic, and thermoelectric behaviors of B-BOP detectors and predict for the three bands (i) a sufficient mechanical stability, (ii) a good electromagnetic absorption higher than 95%, (iii) a high response value better than 10   V/W, and (iv) especially a very low noise equivalent power reaching 1  aW/Hz at 50 mK.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.58.000398