Time-of-flight imaging on fiber-coupled SNSPDs shows no significant beam divergence for most mode sizes, contradicting assumptions that large active areas are required for high-efficiency detection.
Broadband polarization insensitivity and high detection efficiency in high-fill-factor superconducting microwire single-photon detectors
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In-Situ Measurement of Beam Divergence in a High Efficiency SNSPD Platform
Time-of-flight imaging on fiber-coupled SNSPDs shows no significant beam divergence for most mode sizes, contradicting assumptions that large active areas are required for high-efficiency detection.