Electron bombardment CMOS devices have the advantages of small size, light weight, and high imaging sensitivity. Studying how to obtain high-gain EBCMOS devices has a profound impact on industries such as low-light night vision technology. In the experiment, we combined Monte-Carlo ideas with the physical model of the interaction between the low-energy electrons and the substrate material, and the movement trajectory and distribution of the electrons in the solid were simulated, which proved the existence of the electron multiplication benefit. In the experiment, the incident electron energy is 4KeV, the incident electron beam diameter is 20nm, the thickness of the passivation layer is 60nm, and the thickness of the p-type epitaxial layer is 10 microns. The electron collection efficiency of the substrate material under uniform doping is about 46.5%. The maximum theoretical collection efficiency under gradient doping can reach 84%. The research on electron bombardment CMOS devices has certain reference value.
Proc. SPIE. 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016
KEYWORDS: Digital signal processing, Electrodes, Interference (communication), Power supplies, Signal processing, Image intensifiers, Signal generators, Analog electronics, Automatic control, Digital electronics
This paper briefly introduces the basic working principle of auto-gating power source. Due to the presence of noise in the
circuit, the cathode pulse signal generated by the AD converter is unstable. In this paper, the circuit of the AD converter
is adjusted to improve the instability of the cathode high voltage pulse signal, especially in the case of low light and high
illumination to avoid the jitter of the pulse. The experiment was carried out. And it could guide the implementation of
this part of the circuit.
This paper introduces the basic principle of auto-gating power supply which using a hybrid automatic brightness control scheme. By the analysis of current as image intensifier to special requirements of auto-gating power supply, a feedback circuit of the auto-gating power supply is analyzed. Find out the reason of the screen flash after the auto-gating power supply assembled image intensifier. This paper designed a feedback circuit which can shorten the response time of auto-gating power supply and improve screen slight flicker phenomenon which the human eye can distinguish under the high intensity of illumination.
The basic principle and formation of the auto-gated power using hybrid automatic brightness control scheme were described in detail. The auto-gated power supply in the application process because the device precision and the low-light level image intensifier between individual differences, fall may cause some products in some cases the SNR and resolution, and decrease the consistency of the product. This paper puts forward the corresponding solutions to these problems. And through experiments on the improved auto gated power supply with automatic gated power has not been improved compared. Applications of the auto-gated power in military, police and civil area were forecasted.
The basic principle and formation of the auto-gated power, a new kind power of low-light level image
intensifiers, were described in detail. The advantages and disadvantages of auto-gated power with the
traditional high voltage DC power were studied. The imaging resolution and signal-to-noise ratio were
compared by experiment. Applications of the auto-gated power in military and civil field were