Blackmer L L, Vankerkhove A P, Baldwin R E, Stultz K F
Appl Opt. 1970 Dec 1;9(12):2753-61. doi: 10.1364/AO.9.002753.
Some parameters related to the photographic recording of digital data by means of superposed diffraction gratings have been studied. The efficiencies of composite patterns formed by coherent multiple-beam interference depend strongly on the average exposure, beam balance ratios, spatial frequencies employed, and whether the exposures are made simultaneously or sequentially. Simultaneous exposures of N recording beams yield first-order outputs that are more intense by the factor N than the outputs of the same number of sequential exposures, other conditions being equal. The usable readout signal strength is limited primarily by the appearance of false images caused by nonlinear film transfer characteristics.
已经研究了一些与通过叠加衍射光栅进行数字数据的摄影记录相关的参数。由相干多光束干涉形成的复合图案的效率强烈依赖于平均曝光量、光束平衡比、所采用的空间频率以及曝光是同时进行还是顺序进行。在其他条件相同的情况下，N个记录光束的同时曝光产生的一阶输出比相同数量的顺序曝光的输出强度高N倍。可用读出信号强度主要受非线性胶片传输特性导致的虚假图像出现的限制。
