27 January 2022 InGaAs focal plane array for transient astronomy in the NIR
Marcus Birch, Jamie Soon, Tony D. Travouillon, Trevor Mendel, Brian W. Taylor, Blaise Anthony C. Kuo Tiong
Author Affiliations +
Abstract

An indium-gallium-arsenide (InGaAs) detector is tested for use on the new Dynamic REd All-sky Monitoring Survey (DREAMS) 0.5-m telescope. DREAMS is novel for its use of InGaAs as a higher-noise and lower-cost alternative to mercury-cadmium-telluride. The Princeton Infrared Technologies 1280SCICAM, which has one of the smallest pitches and largest focal planes of any commercially available InGaAs detector, is extensively characterized to determine the viability of InGaAs detectors for astronomy. We find the 1280SCICAM to have the one of the lowest dark currents (67e  −    /  s) of any commercially available InGaAs focal plane array, and also confirm no fringing or non-linearity is present. Given its low noise, we conclude that DREAMS will be sufficiently background limited with InGaAs, and by extension, InGaAs is well-suited for application on low-angular-resolution NIR instruments.

© 2022 Society of Photo-Optical Instrumentation Engineers (SPIE) 2329-4124/2022/$28.00 © 2022 SPIE
Marcus Birch, Jamie Soon, Tony D. Travouillon, Trevor Mendel, Brian W. Taylor, and Blaise Anthony C. Kuo Tiong "InGaAs focal plane array for transient astronomy in the NIR," Journal of Astronomical Telescopes, Instruments, and Systems 8(1), 016001 (27 January 2022). https://doi.org/10.1117/1.JATIS.8.1.016001
Received: 4 May 2021; Accepted: 4 January 2022; Published: 27 January 2022
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KEYWORDS
Indium gallium arsenide

Staring arrays

Sensors

Near infrared

Astronomy

Mercury cadmium telluride

Radon

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