Print Email Facebook Twitter Frequency division multiplexing readout of 60 low-noise transition-edge sensor bolometers Title Frequency division multiplexing readout of 60 low-noise transition-edge sensor bolometers Author Wang, Q. (SRON Netherlands Institute for Space Research; Rijksuniversiteit Groningen) Khosropanah, P. (SRON Netherlands Institute for Space Research) Van Der Kuur, J. (SRON Netherlands Institute for Space Research) de Lange, G. (SRON Netherlands Institute for Space Research) Audley, M. D. (SRON Netherlands Institute for Space Research) Aminaei, A. (SRON Netherlands Institute for Space Research) Ridder, M.L. (SRON Netherlands Institute for Space Research) Van Der Linden, A. J. (SRON Netherlands Institute for Space Research) Bruijn, M. P. (SRON Netherlands Institute for Space Research) Gao, J.R. (TU Delft ImPhys/Optics; SRON Netherlands Institute for Space Research) Date 2021 Abstract We demonstrate multiplexing readout of 60 transition edge sensor (TES) bolometers operating at 90 mK using a frequency division multiplexing readout chain with bias frequencies ranging from 1 to 3.5 MHz and with a typical frequency spacing of 32 kHz. The readout chain starts with a two-stage SQUID amplifier and has a noise level of 9.5 pA/ Hz. We compare current-voltage curves and noise spectra of TESs measured in a single-pixel mode and in a multiplexing mode. We also map the noise equivalent power (NEP) and the saturation power of the bolometers in both modes, where there are 43 pixels that do not show more than 10% difference in NEP and 5% in saturation power when measured in single pixel and multiplex modes. We have read out a TES with an NEP of 0.45 aW/ Hz in the multiplexing-mode, which demonstrates the capability of reading out ultra-low noise TES bolometer arrays for space applications. To reference this document use: http://resolver.tudelft.nl/uuid:e5fb4316-5b3f-40d0-89a5-4d6690bfed5d DOI https://doi.org/10.1063/5.0065570 ISSN 0003-6951 Source Applied Physics Letters, 119 (18) Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2021 Q. Wang, P. Khosropanah, J. Van Der Kuur, G. de Lange, M. D. Audley, A. Aminaei, M.L. Ridder, A. J. Van Der Linden, M. P. Bruijn, J.R. Gao Files PDF APL21_AR_06500.pdf 760.1 KB Close viewer /islandora/object/uuid:e5fb4316-5b3f-40d0-89a5-4d6690bfed5d/datastream/OBJ/view