连续激光辐照面阵CCD串扰现象时空分布特性  

Spatial and temporal distribution characteristics of crosstalk phenomena with continuous laser-irradiated surface-array CCD

作　　者：于程浩 叶继飞 常浩 李南雷 李兰 韩枭 YU Chenghao;YE Jifei;CHANG Hao;LI Nanlei;LI Lan;HAN Xiao(State Key Laboratory of Laser Propulsion&Application,Department of Aerospace and Technology,Space Engineering University,Beijing 101416,China)

机构地区：[1]航天工程大学宇航科学与技术系,激光推进及其应用国家重点实验室,北京101416

出　　处：《激光杂志》2024年第6期39-43,共5页Laser Journal

基　　金：国家自然科学基金(No.11502301)。

摘　　要：研究了532 nm连续激光辐照面阵CCD串扰现象的时空分布特性。以CCD垂直传输沟道的最上游、中游、最下游三个部位作为典型辐照部位。研究结果表明,激光辐照CCD垂直沟道方向上不同位置,不会影响主光斑出现的时序,只要连续激光开始辐照时刻或结束辐照时刻在读出转移动作之前,主体信号电荷将形成干扰图像中的主光斑;但辐照部位对串扰线的时空分布具有重要影响。串扰线长度和空间分布位置,在激光结束辐照于读出转移时刻之前时,与携带溢出电荷的垂直传输势在读出转移时刻到达的位置有关;在激光结束辐照于读出转移时刻之后时,与获得溢出电荷的垂直传输势阱对应的绑定像素位置有关。研究结果进一步完善了连续激光对面阵CCD成像器件的干扰效应研究。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 study 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 distribution of crosstalk lines.The crosstalk line length and spatially distributed position,at the end of the laser irradiation before the readout transfer moment,are related to the position of the vertical transport potential carrying the overflow charge arriving at the readout transfer moment.At the end of the laser irradiation after the readout transfer moment,it is related to the position of the bound pixel corresponding to the vertically transferred potential well that acquires the overflow charge.The results of this paper further refine the study of interference effects in continuous laseropposed array CCD imaging devices.

关 键 词：激光干扰 连续激光 面阵CCD 串扰现象 时空分布 

分 类 号：TN249[电子电信—物理电子学]