Development of aluminum LEKIDs for ballooon-borne far-infrared spectroscopy (Conference Presentation)

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

doi:10.1117/12.2311394

10 July 2018 Development of aluminum LEKIDs for ballooon-borne far-infrared spectroscopy (Conference Presentation)

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

Author Affiliations +

Proceedings Volume 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX; 107080V (2018) https://doi.org/10.1117/12.2311394
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

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.

Conference Presentation

Citation Download Citation

Alyssa Barlis, Steven Hailey-Dunsheath, James E. Aguirre, Charles M. Bradford, Joseph G. Redford, Tashalee S. Billings, Henry G. LeDuc, Christopher M. McKenney, and Matthew I. Hollister "Development of aluminum LEKIDs for ballooon-borne far-infrared spectroscopy (Conference Presentation)", Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107080V (10 July 2018); https://doi.org/10.1117/12.2311394

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KEYWORDS

Spectroscopy

Aluminum

Galactic astronomy

Sensors

Silicon

Far infrared

Inductance

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