Gating circuit device based on avalanche diode

• Main Authors: TAN FUHONG, ZHU WEI, GUO BANGHONG
• Format: Patent
• Language: Chinese; English
• Published: 24.10.2023
• Subjects: BASIC ELECTRONIC CIRCUITRY; COLORIMETRY; ELECTRICITY; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; PULSE TECHNIQUE; RADIATION PYROMETRY; TESTING

The utility model discloses a gating circuit device based on an avalanche diode. The system comprises an FPGA control unit, a time delay chip U1, a time delay chip U2, a high-speed D trigger, an MOSFET tube, an avalanche photodiode and a laser. An output port of the FPGA control unit is respectively connected with input pins of the time delay chip U1 and the time delay chip U2, output pins of the time delay chip U1 and the time delay chip U2 are connected with an input pin of the high-speed D trigger, and the high-speed D trigger is sequentially connected with the MOSFET, the avalanche photodiode and the laser; according to the system disclosed by the utility model, the time for triggering the high-speed D trigger by the time delay chip is adjusted through the clock signal output by the FPGA control unit, so that the on and off of the MOSFET tube are controlled, the quenching and recovery time of the avalanche diode is further accurately controlled, and the single photon detection efficiency is improved. 本实用新