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Proceedings Paper

Development of aluminum LEKIDs for ballooon-borne far-infrared spectroscopy (Conference Presentation)
Author(s): Alyssa Barlis; Steven Hailey-Dunsheath; James E. Aguirre; Charles M. Bradford; Joseph G. Redford; Tashalee S. Billings; Henry G. LeDuc; Christopher M. McKenney; Matthew I. Hollister

Paper Abstract

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 (STARFIRE) will study the evolution of dusty galaxies with observations of the [CII] 158 micron 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 requires large format arrays of dual-polarization-sensitive detectors with NEPs of 1e-17 W/sqrt(Hz). We pattern the LEKIDs in 20-nm aluminum film, and use an array of profiled feedhorns to couple optical radiation onto the meandered inductors. A backshort etched from the backside to a buried oxide layer insures high absorption efficiency without additional matching layers. Initial testing on small sub-arrays has demonstrated a high device yield and median NEP of 4e-18 W/sqrt(Hz). We describe the development and characterization of kilo-pixel arrays using a combination of dark noise measurements and optical response with our cryogenic blackbody.

Paper Details

Date Published: 10 July 2018
Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107080V (10 July 2018); doi: 10.1117/12.2311394
Show Author Affiliations
Alyssa Barlis, Univ. of Pennsylvania (United States)
Steven Hailey-Dunsheath, Caltech (United States)
James E. Aguirre, Univ. of Pennsylvania (United States)
Charles M. Bradford, Caltech (United States)
Joseph G. Redford, Caltech (United States)
Tashalee S. Billings, Univ. of Pennsylvania (United States)
Henry G. LeDuc, Jet Propulsion Lab. (United States)
Christopher M. McKenney, National Institute of Standards and Technology (United States)
Matthew I. Hollister, Fermi National Accelerator Lab. (United States)

Published in SPIE Proceedings Vol. 10708:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
Jonas Zmuidzinas; Jian-Rong Gao, Editor(s)

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