Fig. 5

Simulation results electric field in absorption under the Geiger mode. The values of W_{multiplication} is 100 nm (black square), 200 nm (black triangle), 300 nm (black circle). Figure 4 presents the simulated field-voltage characteristics in the absorption layers under the Geiger mode. The thickness of the charge layer is 50 nm, and the thicknesses of the multiplication layer are 100, 200, and 300 nm, respectively.