Coincidence photon counter Teensy 4.0

2 channel Coincidence counter for single photon experiments, with Teensy 4.0 counting MCP. 4 layer pcb

Input 5V TTL pulses. Input has 50 ohm impedance. Counting is done via de digital in ports of Teensy

Ref:

Dietrich Dehlinger, M. W. Mitchell; Entangled photon apparatus for the undergraduate laboratory. Am. J. Phys. 1 September 2002; 70 (9): 898–902. https://doi.org/10.1119/1.1498859