科学级光学CCD非线性特性测试

Nonlinearity Property Testing of the Scientific Grade Optical CCD

在惯性约束聚变(ICF)实验研究中,科学级CCD常和光谱仪、条纹相机等诊断设备组合进行冲击波等物理过程的时间、空间方面的诊断研究。非线性作为CCD一个非常重要的性能参数,在实验的后处理过程中有着相当重要的作用,实验分别采取固定曝光时间,改变光源的出射功率密度、固定光源的输出功率密度和改变CCD的曝光时间两种方案对TEK 512×512DB CCD的非线性特性进行测试,计算得到两种实验方案下该CCD的非线性度分别为0.595%和0.508%,并通过对各种因素的评估得到第一种标定方案为最佳,为科学级CCD的性能参数自动测试平台的建立提供参考。

In inertial confinement fusion（ICF） experimental studies,scientific-grade CCD coupled with streak camera is widely used in time and space diagnosis experiment with physical processes such as shock wave.As a significant property of the scientific grade CCD,nonlinearity plays an important role in experimental dealing.The experiment tests the nonlinearity property of the TEK 512×512DB CCD with the two schemes respectively： that the exposure time is fixed,the power density of the RS-5B is varied;power density is fixed,the exposure time is varied,and it shows the nonlinearity of the CCD is 0.595% and 0.508% respectively,meanwhile,the two experimental scheme are evaluated by analyzing kinds of factors,indicating that the first scheme is better,which provides the reference for establishment of automated testing platform.