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Schematic of the time-of-flight imaging setup, mainly including an imaging system and a coupling system. HWP is a wave plate, PBS is a polarization beam splitter, FCR is a fiber collimation package, and MMF is a 1 meter multimode fiber. Inset: Image of a laser spot coupling to the CS-SMSPD at room temperature using a cryo-lens, captured by an infrared camera.
Source publication
Numerous applications at the photon-starved regime require a free-space coupling single-photon 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 µm in diameter, a DCR of ${\sim}{5}\;{\rm kcps}$ ∼...
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