Temperature Dependence Study of Mesa-Type InGaAs/InAlAs Avalanche Photodiode Characteristics

Figure 3

Schematics of avalanche breakdown mechanism of APD with simplified energy band diagram at the reverse voltage of . The electron with high enough kinetics energy drifts to the avalanche region and gets accelerated to create a secondary electron-hole pair. The secondary electron-hole pair in turn generates another electron-hole pair, leading to snowball avalanche process.