Progress towards photon-counting infrared arrays for interferometry

David F. Buscher; Eugene B. Seneta; Xiaowei Sun; John S. Young; Gert Finger

doi:10.1117/12.2232598

4 August 2016 Progress towards photon-counting infrared arrays for interferometry

David F. Buscher, Eugene B. Seneta, Xiaowei Sun, John S. Young, Gert Finger

Proceedings Volume 9907, Optical and Infrared Interferometry and Imaging V; 990716 (2016) https://doi.org/10.1117/12.2232598
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

The advent of low-dark-current eAPD arrays in the near infrared ushers in the possibility for photon-counting, high quantum efficiency detectors at these wavelengths. Such detectors would revolutionise the sensitivity of interferometry because near-infrared wavelengths are at the "sweet spot" between the corrupting effects of atmospheric seeing at shorter wavelengths and thermal noise at longer wavelengths. We report on laboratory experiments with cooled Selex Saphira detectors aimed at demonstrating photon-counting performance with these devices by exploiting enhanced avalanche gain and multiple non-destructive readouts. We explain the optimum modes for employing these detectors in interferometry.

Citation Download Citation

David F. Buscher, Eugene B. Seneta, Xiaowei Sun, John S. Young, and Gert Finger "Progress towards photon-counting infrared arrays for interferometry", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990716 (4 August 2016); https://doi.org/10.1117/12.2232598

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