Abstract

We present our measurements of the detection efficiency of free-space and fiber-coupled single-photon detectors at wavelengths near 851 nm and 1533.6 nm. We investigate the spatial uniformity of one free-space-coupled silicon single-photon avalanche diode (SPAD) and present a comparison between fusion-spliced and connectorized fiber-coupled single-photon detectors. We find that our expanded relative uncertainty for a single measurement of the detection efficiency is as low as 0.7 % for fiber-coupled measurements at 1533.6 nm and as high as 1.8 % for our free-space characterization at 851.8 nm.

© 2020 The Author(s)

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More Like This
Free-Space Coupled Low False Count Superconducting Nanowire Single-Photon Detector

Andrew S. Mueller, Boris A. Korzh, Marcus Runyan, Emma E. Wollman, Andrew D. Beyer, Jason P. Allmaras, Bruce Bumble, Ryan M. Briggs, Angel E. Velasco, Lautaro Narvaez, and Matthew D. Shaw
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