Highly sensitive and wide dynamic range polarimetric detectors arrays in the submillimeter domain

L. Rodriguez; A. O. Adami; A. Aliane; X. de la Broïse; C. Delisle; A. Demonti; D. Desforge; S. Dubos; L. Dussopt; C. Gennet; V. Goudon; O. Gevin; H. Kaya; G. Lasfargues; J. Martignac; X-F. Navick; A. Poglitsch; V. Reveret; M. Sauvage; T. Tollet; F. Visticot

doi:10.1117/12.2630223

31 August 2022 Highly sensitive and wide dynamic range polarimetric detectors arrays in the submillimeter domain

L. Rodriguez, A. O. Adami, A. Aliane, X. de la Broïse, C. Delisle, A. Demonti, D. Desforge, S. Dubos, L. Dussopt, C. Gennet, V. Goudon, O. Gevin, H. Kaya, G. Lasfargues, J. Martignac, X-F. Navick, A. Poglitsch, V. Reveret, M. Sauvage, T. Tollet, F. Visticot

Author Affiliations +

Proceedings Volume 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI; 121900P (2022) https://doi.org/10.1117/12.2630223
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

One of the main goals of the canceled Space Infrared Telescope for Cosmology and Astrophysics (SPICA), was to reveal the evidence of the influence of magnetic field in the structuration of different astrophysical objects, as for example the filamentary structure of star-forming regions. For this purpose, “instrument-in-pixel” detector arrays were developed under ESA, CNES and FOCUS contracts, to propose sensitive, compact and easy to integrate detection solutions for a Space Observatory. Magnetic field influences the light emission or absorption of small grains and molecules imprinting its characteristics in the received electromagnetic message in terms of polarization, degree, angle and intensity. Each pixel of the developed detectors absorb the radiation through two orthogonal dipole networks. The detector array is organized like a chessboard with every other pixel having absorbers rotated by 45° in order to unveil simultaneously the linear Stokes parameters without any optical loss. A very large absorption efficiency is obtained, as usual since PACS detectors, by a backshort-under-grid scheme. To obtain the goal sensitivity of 1 attoW/√Hz, detectors are cooled to 50 mK and linked to an Above IC CMOS readout circuit. For each pixel, four interleaved spiral silicon sensors gather the absorber power. They are organized in a Wheatstone bridge configuration that allows fully differential outputs: total power and polarization unbalanced intensity.

Conference Presentation

Citation Download Citation

L. Rodriguez, A. O. Adami, A. Aliane, X. de la Broïse, C. Delisle, A. Demonti, D. Desforge, S. Dubos, L. Dussopt, C. Gennet, V. Goudon, O. Gevin, H. Kaya, G. Lasfargues, J. Martignac, X-F. Navick, A. Poglitsch, V. Reveret, M. Sauvage, T. Tollet, and F. Visticot "Highly sensitive and wide dynamic range polarimetric detectors arrays in the submillimeter domain", Proc. SPIE 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 121900P (31 August 2022); https://doi.org/10.1117/12.2630223

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available