为了验证激光辐照CCD时产生的串音饱和现象,从理论上给出了单束激光辐照下CCD发生串音饱和时的物理模型,并在此基础上给出了两光束入射情况下CCD发生串音饱和时的物理模型。通过定量计算得到了激光入射能量密度与CCD饱和像素数量的关系曲线和具体数据,并通过实验进行了验证。理论和实验结果表明,入射激光功率密度与CCD饱和区域面积之间呈非线性关系。当两束光同时进入CCD时,其中一束光的功率的增加会对另一束光的探测起到明显的干扰作用。 In order to verify the crosstalk saturation phenomenon caused by laser irradiation of CCD, the physical model of CCD in crosstalk saturation under single-beam laser irradiation is theoretically given, and on the basis of this, the CCD Physical model when crosstalk saturation occurs. The curve and specific data of the laser incident energy density and the number of CCD saturated pixels are obtained by quantitative calculation and verified by experiments. Theoretical and experimental results show that there is a nonlinear relationship between the incident laser power density and the area of ​​CCD saturation area. When two beams of light enter the CCD at the same time, an increase in the power of one of the beams can have a significant interference with the detection of the other beam.