A photosensitive material based on photo-induced polymerization has been used to record holograms. Exposure of 1 to 30 mJ/cm2 at 0.694 μ were followed by rapid optical, dry processing with ultraviolet radiation. Good resolution and diffraction efficiencies of up to 45% into the first order were observed.

A new class of heteroacenes containing B, N and S elements in the 22-electron aromatic nucleus has been synthesized by reaction of diaminoterthiophenes with dichlorophenylborane. Their structure was studied by X-ray crystallography and DFT calculations. UV-Vis absorption /emission spectroscopy shows high rigidity and deep-blue fluorescence of these compounds.

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An experiment to record a holographic motion picture is described. The source of illumination is a cw ruby laser operated in the repetitively Q-switched mode. The film was recorded at the rate of 20 frames per second on 100 ft of 70-mm film, transported by a conventional 70-mm sequential-still camera. The subject of the movie was a group of tropical fish.