Kral E L, Walkup J F, Hagler M O
Appl Opt. 1982 Apr 1;21(7):1281-90. doi: 10.1364/AO.21.001281.
Random phase diffusers used to individually code the reference beams employed in multiplexing a set of holograms are best characterized by their autocorrelation and cross-correlation properties. In this paper multilevel (n-level) phase diffusers and ground-glass diffuser models based on a spatial random telegraph wave are employed to investigate the performance of such diffusers for both plane wave and spherical wave illumination. The advantage of using balanced phase diffusers is indicated, and it is shown that a binary phase diffuser can, in principle, perform as well as a multilevel (n > 2) diffuser, and even as well as ground glass if the spatial fineness of the diffusers is comparable. Two signal-to-noise ratio measures of the performance of the various diffuser systems in a multiplex holography application are evaluated and discussed.
用于对一组全息图复用中所采用的参考光束进行单独编码的随机相位漫射器，其最佳特性由其自相关和互相关特性来表征。本文采用基于空间随机电报波的多级（n级）相位漫射器和毛玻璃漫射器模型，来研究此类漫射器在平面波和球面波照明情况下的性能。文中指出了使用平衡相位漫射器的优势，并且表明，原则上二元相位漫射器的性能可以与多级（n>2）漫射器相当，甚至在漫射器的空间精细度可比时，其性能与毛玻璃相当。文中评估并讨论了在复用全息术应用中各种漫射器系统性能的两种信噪比度量。
