全息干板的时间响应特性

全息干板的感光过程涉及到银原子和光电子的动力学过程,这些动力学特性决定了全息干板对不同曝光时间尺度具有不同的感光效率。介绍了用随机过程方法建立的全息干板时间响应理论模型,用该模型分析了SlavichVRP-M型全息干板的时间响应特性并进行了数值模拟。设计了三套不同的曝光实验装置用于时间响应特性的研究,给出了8个时间点的实验数据,在曝光量不变的情况下,曝光时间范围为0.5 ns~10 s。实验结果与理论结果比较吻合,表明全息干板在曝光过程中存在低照度和高照度互易律失效。最后简要分析了互易律失效对全息照相的影响。

Time Response Character of Holographic Plate

The sensitivity of a holographic plate was concerned with the dynamic process of silver atoms and photoelectrons,and this dynamic characteristic made the holographic plate have different sensitive efficiency for different exposure time scales.A probabilistic model has been introduced to investigate the time response character of Slavich VRP-M holographic plate,and numerical simulation and experimental research were conducted.Three types of experimental equipments are designed to produce long-duration laser pulse,microsecond laser pulse and ultrashort laser pulse,and the experiment data from 8 exposure durations are obtained.With the same exposure energy,the exposure time changed from 10 s to 0.5 ns.The experimental results was in accordance with the theoretical results,which showed that the holographic plate suffered low intensity and high reciprocity law failure.Meanwhile,the effect of reciprocity law failure on holography was also analyzed.