Fig. 1. Basic model of photoelectric mixing technology[4]

Fig. 2. Classification of photoelectric mixing technology

Fig. 3. Schematic of HgCdTe LM-APDs produced by DRS company in USA[11]. (a) Cross-section; (b) top view

Fig. 4. Structural diagram of InGaAs-based LM-APD[14]

Fig. 5. Structural diagram of 32×32 InGaAs GM-APD produced by Princeton Lightwave company in USA[27]

Fig. 6. Structural diagram of ICCD

Fig. 7. EBAPS detector chip produced by Intevac company in USA[32]

Fig. 8. Structural diagram of novel microwave photoelectric mixer[35-36]

Fig. 9. Large diameter crystals produced by Fast Pulse Technology company in USA