本文报道了将重铬盐酸-聚乙烯醇用作全息的实时记录介质的新发现.这种感光材料的分光感度和分辨率同重铬酸明胶不相上下,衍射效率可达30%左右.其独特之处是能够实时显影、原位用热或光定影,用它制作的全息图还具有耐高温、耐潮湿和不发霉等优点.文中分析了重铬酸盐-聚乙烯醇的感光成像机理和全息记录特性,最后还给出了这种材料在实时干涉计量、全息存贮及特征识别三个实验中运用的结果.

A new holographic recording material-dichromated-polyvinyl alcohol (DC-PVA) used in real-time holographic recording is described. This material can be real-time developed easily, and fixed by using thermal radiation or light illumination at the very position in which it was exposured. In the experiment, some amplitude-phase holograms have been made. The resolution of the DO-PVA is approaching to that of dichromatod gelatin (DOG), and the diffraction efficiency obtained is about 30%. This paper gives the analysis of the mechanism of hologram formation in DO-PVA and holographic characteristics, and. discusses several promising applications such as real-time interferometry, information storage and character-recognition. The experimental results and photos are presented in tho paper.