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Distributed antenna-coupled TES for FIR detector arrays

Day, P. and LeDuc, H. G. and Dowell, C. D. and Lee, R. A. and Turner, A. and Zmuidzinas, J. (2008) Distributed antenna-coupled TES for FIR detector arrays. Journal of Low Temperature Physics, 151 (1-2). pp. 477-482. ISSN 0022-2291. doi:10.1007/s10909-007-9676-3.

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We report progress toward large arrays of sensitive TES bolometers for submillimeter and far-infrared wavelengths with noise equivalent power (NEP) suitable for either imaging from a cooled space telescope or ground based spectroscopy. The arrays are based on a pixel design that makes use of a distributed transition edge sensor (TES) coupled to a slot antenna array. We have electrically characterized prototype detectors consisting of 256 TiN hot-electron TES microbolometers biased in parallel with T c =50 mK. The measured electron-phonon thermal conductance of prototype devices is as low as 1.1 pW/K at 50 mK corresponding to an electrical NEP of 4×10⁻¹⁹ W/Hz½. The time constant of two detectors with different geometries and transition widths was measured under a range of bias conditions. We have measured time constants ≳10⁻³ seconds, which is long enough for straightforward multiplexing with existing multiplexer technology.

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Additional Information:© Springer Science+Business Media, LLC 2008. Received 23 July 2007. Accepted 15 September 2007. Published 19 January 2008. Issue Date April 2008.
Subject Keywords:TES, Antenna, FIR
Issue or Number:1-2
Classification Code:PACS: 95.55.Aq; 84.40.-x; 85.25.Pb
Record Number:CaltechAUTHORS:20200723-174404073
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Official Citation:Day, P., Leduc, H.G., Dowell, C.D. et al. Distributed Antenna-Coupled TES for FIR Detector Arrays. J Low Temp Phys 151, 477–482 (2008).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104552
Deposited By: Rebecca Minjarez
Deposited On:24 Jul 2020 15:50
Last Modified:16 Nov 2021 18:32

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