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本文介绍一种利用夹层全息照相术与脉冲激光器相结合的新方法。在特制的全息照片旋转支架上,夹在一起的两块感光板在激光器的双重脉冲运转期间通过狭缝进行曝光。这两个脉冲间的间隔小于工毫秒。然后,在一个鉴定支架上,一块板相对于另一个旋转,结果由这两个脉冲形成的象迭加在一起。这时,将两块板粘合在一起。如果将乳剂分开,那末在两脉冲之间物体倾斜所引起的条纹可在再现时使夹层全息照片作类似的但大得多的倾斜而得到消除。甚至倾斜的方向——向前或朝后——都是这样确定的。
This article describes a new method that combines mezzanine holography with pulsed lasers. On a specially crafted holographic rotation stand, two plates clamped together are exposed through the slit during double pulse operation of the laser. The interval between these two pulses is less than milliseconds. Then, on an identification stand, one plate rotates relative to the other, with the result that the images formed by these two pulses are superimposed together. At this point, the two plates are glued together. If the emulsion is separated, then the streaks caused by the object tilting between the two pulses can be canceled with a similar but much larger tilt of the holographic hologram at the time of reconstruction. Even the sloping direction - forward or backward - is so determined.