Analysis of Noise Performance in Circuit Design for EMCCD

EMCCD gain principle is introduced,all kinds of noise generation mechanism and how the external driving circuit influences the noise of EMCCD are analyzed.It′s a valuable reference for design EMCCD cameras.EMCCD shot noise is relative to quantum efficiency and can′t be eliminated.Heat dark current noise is relative to work temperature,exposure time and work mode.EMCCD works in a very cold condition and in IMO mode;CIC noise has a relationship with work mode,the vertical transfer signal amplitude,frequency,rising edge,falling edge.It chooses right driving voltage amplitude and frequency,and plastic the shape of driving signal simultaneously.The noise factor F is strongly influenced by the high-voltage driving signal and work temperature,it maintains a stable high-voltage driving signal and a fixed environment temperature.Equivalent readout noise is relative to the gain,readout rate and the temperature.It reduces read speed,increases gain in application to suppress readout noise.