A free-space coupled, large-active-area superconducting microstrip single-photon detector for photon-counting time-of-flight imaging
Applied Optics(2024)
摘要
Numerous applications at the photon-starved regime require a free-space
coupling singlephoton detector with a large active area, low dark count rate
(DCR), and superior time resolutions. Here,we developed a superconducting
microstrip single-photon detector (SMSPD), with a large active area of 260 um
in diameter, a DCR of 5 kcps, and a low time jitter of 171 ps, operated at
near-infrared of 1550 nm. As a demonstration, we applied the detector to a
single-pixel galvanometer scanning system and successfully reconstructed object
information in depth and intensity using a time-correlated photon counting
technology.
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