公开(公告)号：US4953924A

公开(公告)日：1990-09-04

申请号：US139319

申请日：1987-12-30

申请人： Redfield Stephen R. ,  Lambertus Hesselink

发明人： Redfield Stephen R. ,  Lambertus Hesselink

IPC分类号： B41M5/26 ,  G03H1/02 ,  G03H1/04

CPC分类号： G03H1/0248 ,  Y10S359/90

摘要： A method for promoting enhanced nondestructive reconstruction of holograms recorded in photorefractive media involves control of the polarization states of the reconstruction beam and the recording beams, control of the cummulative recording energy, and use of a relatively high external field applied across the media during recording which is subsequently reduced during reconstruction. The resulting reconstruction history characteristics are selectively tailored by adjusting the polarization and intensity of the reconstruction beam, the recording geometry, and the applied voltage during reconstruction and recording, and various other parameters. In general, the reconstruction efficiency starts at a relatively high level, initially reduces, and then subsequently grows above the starting value, and can be made substantially nondestructive over a typical reconstruction cycle, with erasure times exceeding forty-five minutes.

摘要翻译： 用于促进在光折射介质中记录的全息图的增强的非破坏性重建的方法包括控制重建光束和记录光束的偏振状态，累积记录能量的控制以及在记录期间在介质上施加的相对高的外部场的使用 在重建期间随后减少。 通过在重建和记录期间调整重建光束的极化和强度，记录几何形状和施加的电压以及各种其它参数来选择性地调整所得到的重建历史特征。 一般来说，重建效率从较高的水平开始，最初降低，然后随后增长到起始值以上，并且可以在典型的重建周期内实现非破坏性，擦除时间超过四十五分钟。