Abstract
A comparative analysis of the recording media based on poly‐N‐epoxypropylcarbazole films doped with cationic, anionic, and intraionic organic dyes has been carried out for the purposes of holographic interferometry. It is shown that in the case of application of intraionic dyes recording media have satisfactory information characteristics. The use of anionic and cationic dyes does not give a positive result because of the absence of the photoconductivity effect in the anionic dyes and of the high electrical conductivity of the films on increase of the temperature of the cationic dyes. The effect of long‐term storage of a latent image in the films with intraionic dyes makes it possible to use them for recording holograms with several exposures.
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