Fig. 1. Structure diagram of APD single-photon avalanche focal plane array

Fig. 2. Schematic diagram of planar SPAD chip structure

Fig. 3. Schematic diagram of mesa-type SPAD chip structure

Fig. 4. Basic block diagram of ROIC

Fig. 5. 128×32 InGaAs single-photon avalanche focal plane array

Fig. 6. 64×64 InGaAs single-photon avalanche focal plane array

Fig. 7. (a) Schematic diagram of crosstalk; （b） SPAD spontaneous emission spectrum; （c） Crosstalk suppression results

Fig. 8. Schematic diagram of pixel circuit for Lidar

Fig. 9. Lidar image of the Grand Canyon

Fig. 10. Diagram of laser communication system and receiving link

Fig. 11. Architecture block diagram of 32×32 asynchronous ROIC

Fig. 12. Architecture diagram of passive imaging ROIC with overflow bit