Highly sensitive far-IR KIDs for PRIMA: optical characterization of a 25-micron array

Logan Foote; Chris Albert; Ritoban Basu Thakur; Nicholas Cothard; Peter Day; Steven Hailey-Dunsheath; Pierre Echternach; Byeong Ho Eom; Reinier M. Janssen; Elijah Kane; Henry Leduc; Lun-Jun Liu; Hien Nguyen; Jason Glenn; Charles Bradford; Jonas Zmuidzinas

doi:10.1117/12.3020228

16 August 2024 Highly sensitive far-IR KIDs for PRIMA: optical characterization of a 25-micron array

Logan Foote, Chris Albert, Ritoban Basu Thakur, Nicholas Cothard, Peter Day, Steven Hailey-Dunsheath, Pierre Echternach, Byeong Ho Eom, Reinier M. Janssen, Elijah Kane, Henry Leduc, Lun-Jun Liu, Hien Nguyen, Jason Glenn, Charles Bradford, Jonas Zmuidzinas

Author Affiliations +

Proceedings Volume 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII; 131020D (2024) https://doi.org/10.1117/12.3020228
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The PRobe far-Infrared Mission for Astrophysics (PRIMA) is a future cryogenic space observatory that will revolutionize study of evolving galaxies and forming planetary systems with highly-sensitive far-infrared (far-IR) imaging and spectroscopy. PRIMA’s spectrometer, the Far-InfraRed Enhanced Survey Spectrometer (FIRESS), will deploy kilo-pixel aluminum kinetic inductance detector (KID) arrays covering wavelengths from 24-235 μm. Here we present optical characterization of a prototype FIRESS array operating at 25 μm. We employ a blackbody modulation technique to measure the detector responsivity, and discuss methods for reducing 1/f noise from the multi-tone readout electronics. We measure an NEP below 3.5 × 10⁻²⁰ W/ √ Hz at 10 Hz accross the array, which exceeds the requirement to be limited by the astrophysical background limit for PRIMA’s FIRESS spectrometer. We discuss limitations of the multi-tone readout and compare results to measurements with a single-tone readout system.

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Logan Foote, Chris Albert, Ritoban Basu Thakur, Nicholas Cothard, Peter Day, Steven Hailey-Dunsheath, Pierre Echternach, Byeong Ho Eom, Reinier M. Janssen, Elijah Kane, Henry Leduc, Lun-Jun Liu, Hien Nguyen, Jason Glenn, Charles Bradford, and Jonas Zmuidzinas "Highly sensitive far-IR KIDs for PRIMA: optical characterization of a 25-micron array", Proc. SPIE 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII, 131020D (16 August 2024); https://doi.org/10.1117/12.3020228

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