脉冲夹心全息术
Pulsed sandwich holography.
作者信息
Bjelkhagen H
出版信息
Appl Opt. 1977 Jun 1;16(6):1727-31. doi: 10.1364/AO.16.001727.
A new method is introduced which utilizes sandwich holography combined with a pulsed laser. In a special rotating hologram holder two plates sandwiched together are exposed through a slit during the double pulse operation of a laser. The two pulses are separated by less than 1 msec. Afterward, in an evaluating holder, one plate is rotated in relation to the other so that the images from the two pulses are overlapped. Then the two plates are glued together. If the emulsions are separated, fringes caused by object tilt between the two pulses can be eliminated by an analogous, but much larger, tilt of the sandwich hologram during reconstruction. Even the direction of tilt, forward or backward, is found this way.
介绍了一种利用夹层全息术与脉冲激光相结合的新方法。在一个特殊的旋转全息图支架中，两块夹在一起的平板在激光的双脉冲操作期间通过一个狭缝曝光。两个脉冲的间隔时间小于1毫秒。之后，在一个评估支架中，一块平板相对于另一块平板旋转，以便使来自两个脉冲的图像重叠。然后将两块平板粘在一起。如果乳剂层是分开的，那么在重建过程中，通过夹层全息图类似但大得多的倾斜，可以消除两个脉冲之间由物体倾斜引起的条纹。甚至倾斜的方向，向前或向后，也能通过这种方式确定。
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