The SPD_AT is an ultra-low-noise, high quantum efficiency and low timing jitter near infrared [900 - 1700 nm] single photon counter with 50 ps timing correlation feature. The SPD_AT includes a Geiger-mode InGaAs avalanche photodiode and thermoelectric coolers that ensure high detection efficiency up to 25 per cent, a very low dark count rate <5.10-6 per ns gate, and a low timing jitter <180ps.
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