InGaAs gated single-photon detector

This product is a single-photon detector with independent intellectual property rights. The core component employs domestically developed InGaAs/InP APDs with independent intellectual property rights, featuring high efficiency, low noise, and high stability, among other characteristics. It plays an indispensable role in the detection of weak signals at the single-photon level and serves as a core device for quantum signal optoelectronic conversion.
Operating in a gated mode, this product utilizes techniques such as gate modulation, avalanche signal discrimination, and dead-time suppression to reduce local noise while ensuring high efficiency. At a trigger frequency of 1.25 GHz, the maximum detector efficiency is ≥25%, with a minimum dark count rate of 300 cps and a minimum afterpulse rate of 1% at a dead time of 200 ns. It supports user-configurable parameters such as bias voltage, dead time, and discrimination threshold, as well as custom delay scanning and pulse detection functions. Additionally, it features built-in Time-to-Digital Conversion (TDC) functionality, offering two acquisition channels with resolutions as low as 50 ps.