Spatial and temporal distribution characteristics of crosstalk phenomena with continuous laser-irradiated surface-array CCD
In this paper,the spatial and temporal distribution characteristics of the crosstalk phenomenon with 532 nm continuous laser-irradiated surface-array CCD were investigated.Taking the three most upstream,midstream and downstream parts of the vertical transmission channel of the CCD as the typical irradiation sites.The results of the stud-y show that laser irradiation of the CCD at different positions in the direction of the vertical channel does not affect the timing of the appearance of the main spot.As long as the moment of the beginning of the continuous laser irradiation or the moment of the end of the irradiation is before the readout transfer action,the main signal charge will form the main spot in the interference image.However,the irradiation site has an important influence on the spatial and temporal dis-tribution of crosstalk lines.The crosstalk line length and spatially distributed position,at the end of the laser irradia-tion before the readout transfer moment,are related to the position of the vertical transport potential carrying the over-flow charge arriving at the readout transfer moment.At the end of the laser irradiation after the readout transfer mo-ment,it is related to the position of the bound pixel corresponding to the vertically transferred potential well that ac-quires the overflow charge.The results of this paper further refine the study of interference effects in continuous laser-opposed array CCD imaging devices.
laser interferencecontinuous lasersurface-array CCDcrosstalk phenomenonspatial and tempo-ral distribution
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