合成狭缝彩虹全息图的分析

Analysis of the Synthetic Slit Rainbow Hologram

彩虹全息是全息显示中一种十分重要的能用白光再现的全息术,然而加入狭缝后降低了光能的使用率。为此八十年代初发展了一种合成狭缝的方法,近十年来不少学者对此方法进行了多方面的研究探讨,并发表了多篇论文,提出了不同的记录系统和方法。本文从基元全息图出发,分析了合成狭缝全息图的本质特征,获得了其普遍规律,指出了它的优缺点,并对有争议的问题进行了评述。

Rainbow hologram is a very important technology in holographic displays. It can be reconstructed by white light source. However, in the case of introducing a narrow slit, the light energy that can be used for recording will be decreased. For this reason, a new method of making rainbow hologram called synthetic slit method was developed in the early 1980s. Since then, many new recording systems and optical set-up were suggested to improve this method and many papers have been presented. By using scalar wave theory, an universal theoretical analysis of the synthetic slit rainbow hologram is made in this paper.