Radiation tolerant, photon counting, visible, and near-IR detectors for space coronagraphs

Bernard J. Rauscher; S. E. Holland; Emily Kan; Daniel Kelly; Laddawan Miko; D. Brent Mott; Augustyn Waczynski

doi:10.1117/12.2628961

27 August 2022 Radiation tolerant, photon counting, visible, and near-IR detectors for space coronagraphs

Bernard J. Rauscher, S. E. Holland, Emily Kan, Daniel Kelly, Laddawan Miko, D. Brent Mott, Augustyn Waczynski

Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave; 1218065 (2022) https://doi.org/10.1117/12.2628961
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

The search for habitable worlds using large, coronagraphic, space telescopes requires better detectors than exist today. Requirements include photon counting read noise, ultra-low dark current, excellent QE from λ = 400 − 1000 nm, excellent radiation tolerance, and a service life of at least 5 years in space. Other desirable properties include operating temperatures consistent with passive cooling, service life of at least 20 years in space, and extended near-UV to near-IR response. This article provides an update on our work since the last SPIE Telescopes + Instruments conference two years ago. Progress includes successful photon counting demonstrations using fully depleted, p-channel, Skipper CCDs by multiple groups. Skipper is one of two photon counting p-channel CCD architectures that we have explored. The other is the hole multiplying CCD (HMCCD). We stopped working on HMCCDs about a year ago after discovering that their use of impact ionization for charge multiplication had undesirable side effects. This article provides a snapshot of our plans for Skipper going forward and more information on why we stopped work on HMCCDs looking back.

Citation Download Citation

Bernard J. Rauscher, S. E. Holland, Emily Kan, Daniel Kelly, Laddawan Miko, D. Brent Mott, and Augustyn Waczynski "Radiation tolerant, photon counting, visible, and near-IR detectors for space coronagraphs", Proc. SPIE 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, 1218065 (27 August 2022); https://doi.org/10.1117/12.2628961

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KEYWORDS

Charge-coupled devices

Sensors

Photon counting

Amplifiers

Electron multiplying charge coupled devices

Astronomy

Quantum efficiency

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