光学学报, 2015, 35 (3): 0314004, 网络出版: 2015-02-04   

行间转移型CCD激光干扰效应阈值估算方法

Estimating Method of Jamming Thresholds for Laser Irradiated Interline Transfer CCD
作者单位
西北核技术研究所激光与物质相互作用国家重点实验室, 陕西 西安 710024
摘要
电荷耦合器件(CCD)图像传感应用中,通过非实测手段获取器件的干扰效应阈值非常重要,有时甚至是唯一手段。分析了行间转移型CCD 单像素饱和与串扰等典型激光干扰效应的影响因素,研究了垂直拖尾、光晕和串扰3种效应的物理本质间的内在联系与区别,初步证实垂直拖尾系数对串扰效应而言为非敏感参数。提出了基于饱和信号电荷量、像元尺寸、量子效率以及光晕抑制率等器件参数,从现有的效应数据预估相似器件单像素饱和阈值、串扰线饱和阈值的外推方法。对柯达面阵CCD 器件的饱和阈值测量与干扰效应实验显示,预估结果与实验值之间的偏差量分别为3%和20%,属于可以接受的范围,表明预估方法切实可行。
Abstract
It is crucial to acquire the jamming thresholds of the photoelectric devices in charge coupled device (CCD) image sensing applications by nonexperimental means, which is a unique way to obtain the thresholds sometimes. Affecting factors of pixel saturation and crosstalk effects in interline transfer CCD are analyzed briefly. The intrinsic relationship and difference between vertical smear, blooming and crosstalk are studied. Results preliminarily suggest that crosstalk is not sensitive to the fractional amount of smear. An extrapolation method to estimate thresholds of the pixel saturation and crosstalk column saturation effects with image sensor specification and historical data of laser irradiation effects is proposed. Device parameters such as quantity of saturation signal charge, pixel size, quantum efficiency and blooming suppression are used in the estimation. Laser irradiating experiments are carried out to measure the jamming thresholds of two similar Kodak area CCDs. The deviations between the estimation results and the experimental data are 3% and 2%, respectively. The acceptable deviations indicate that the predicting method is feasible.

张检民, 张震, 冯国斌, 师宇斌, 程德艳, 赵军. 行间转移型CCD激光干扰效应阈值估算方法[J]. 光学学报, 2015, 35(3): 0314004. Zhang Jianmin, Zhang Zhen, Feng Guobin, Shi Yubin, Cheng Deyan, Zhao Jun. Estimating Method of Jamming Thresholds for Laser Irradiated Interline Transfer CCD[J]. Acta Optica Sinica, 2015, 35(3): 0314004.

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