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Development of Aluminum LEKIDs for Balloon-Borne Far-IR Spectroscopy

Hailey-Dunsheath, S. and Barlis, A. C. M. and Aguirre, J. E. and Bradford, C. M. and Redford, J. G. and Billings, T. S. and LeDuc, H. G. and McKenney, C. M. and Hollister, M. I. (2018) Development of Aluminum LEKIDs for Balloon-Borne Far-IR Spectroscopy. Journal of Low Temperature Physics, 193 (5-6). pp. 968-975. ISSN 0022-2291. doi:10.1007/s10909-018-1927-y.

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We are developing lumped-element kinetic inductance detectors (LEKIDs) designed to achieve background-limited sensitivity for far-infrared (FIR) spectroscopy on a stratospheric balloon. The spectroscopic terahertz airborne receiver for far-infrared exploration will study the evolution of dusty galaxies with observations of the [CII] 158μm and other atomic fine-structure transitions at z=0.5 –1.5, both through direct observations of individual luminous infrared galaxies, and in blind surveys using the technique of line intensity mapping. The spectrometer will require large format (~1800 detectors) arrays of dual-polarization sensitive detectors with NEPs of 1×10^(−17) W Hz^(−1/2) . The low-volume LEKIDs are fabricated with a single layer of aluminum (20-nm-thick) deposited on a crystalline silicon wafer, with resonance frequencies of 100–250 MHz. The inductor is a single meander with a linewidth of 0.4μm , patterned in a grid to absorb optical power in both polarizations. The meander is coupled to a circular waveguide, fed by a conical feedhorn. Initial testing of a small array prototype has demonstrated good yield and a median NEP of 4×10^(−18) W Hz^(-1/2).

Item Type:Article
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URLURL TypeDescription ReadCube access Paper
Hailey-Dunsheath, S.0000-0002-8504-7988
Aguirre, J. E.0000-0002-4810-666X
Bradford, C. M.0000-0001-5261-7094
McKenney, C. M.0000-0003-4917-4872
Additional Information:© Springer Science+Business Media, LLC, part of Springer Nature 2018. Received: 6 November 2017 / Accepted: 16 April 2018. ACMB’s work was supported by a NASA Space Technology Research Fellowship. Detector development for starfire is supported by NASA Grant 15-APRA15-0081. We thank C. Groppi for generously providing the tool used to drill the feedhorns.
Funding AgencyGrant Number
NASA Space Technology Research FellowshipUNSPECIFIED
Issue or Number:5-6
Record Number:CaltechAUTHORS:20180426-144525767
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Official Citation:Hailey-Dunsheath, S., Barlis, A.C.M., Aguirre, J.E. et al. J Low Temp Phys (2018) 193: 968.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86070
Deposited By: George Porter
Deposited On:27 Apr 2018 16:56
Last Modified:15 Nov 2021 20:35

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