Development of Ultra-Low-Noise TES Bolometer Arrays

Journal article (2016)

Authors

T. Suzuki Institute of Space and Astronautical Science (ISAS)/JAXA, SRON Netherlands Institute for Space Research

P. Khosropanah SRON Netherlands Institute for Space Research

Marcel L. Ridder SRON Netherlands Institute for Space Research

R. A. Hijmering SRON Netherlands Institute for Space Research

J.R. Gao SRON Netherlands Institute for Space Research, QN/Gao Lab

H. Akamatsu SRON Netherlands Institute for Space Research

L Gottardi SRON Netherlands Institute for Space Research

J van der Kuur SRON Netherlands Institute for Space Research

BD Jackson SRON Netherlands Institute for Space Research

Research Group

QN/Gao Lab

DRIE TES Transition edge sensor SiN membrane Cryogenic detectors Deep reactive-ion etching Far-infrared spectrometer THz detectors

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To reference this document use:

http://resolver.tudelft.nl/uuid:003c329c-ca79-453c-8e1b-b10b15c57402

Published Date

01-07-2016

Language

English

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Research Group

QN/Gao Lab

Abstract

SRON is developing ultra-low-noise transition edge sensors (TESs) based on a superconducting Ti/Au bilayer on a suspended SiN island with SiN legs for SAFARI aboard SPICA. We have two major concerns about realizing TESs with an ultra-low NEP of 2×10-19W/Hz: achieving lower thermal conductance and no excess noise with respect to the phonon noise. To realize TESs with phonon-noise-limited NEPs, we need to make thinner (c of ∼93mK and R_n of ∼158mΩ. These TESs were characterized under AC bias using our frequency-division multiplexing readout (1–3 MHz) system. TESs without the absorber show NEPs as low as 1.1×10-19W/Hz with a reasonable response speed (