Holography

Recording polarization holograms in polymer films with azo dyes and azo polymers

N. A. Davidenko^a, I. I. Davidenko^a, V. V. Kravchenko^b, E. V. Mokrinskaya^a, V. A. Pavlov^a, I. A. Savchenko^a, V. V. Tarasenko^a, N. G. Chuprina<sup>a

a</sup> Shevchenko Kyiv National University, 01601, Kyiv, Ukraine
^b Litvinenko Institute of Physical Organic Chemistry and Carbon Chemistry, National Academy of Sciences of Ukraine, 02160, Kyiv, Ukraine

Abstract: Based on polymers with the addition of azo dyes as chromophores and azopolymers with the same covalently linked chromophores, recording media for polarization holography are created and their properties are studied when recording holograms of a plane wave front with parallel and perpendicular polarization of recording rays. It is found that the diffraction efficiency and the storage time of holograms are much longer in recording media with films of azo polymers in comparison with polymeric solid solutions of azo dyes. In the latter case, the energy of light is spent only for the trans – cis isomerization of azo dye molecules during exposure of holograms and the polymer chains do not undergo deformation with the formation of a surface relief in the polymer film. Therefore, it is preferable to use recording media based on solid solutions of azo dyes in dynamic polarization holography.

Received: 15.01.2019
Revised: 15.01.2019
Accepted: 04.06.2019

DOI: 10.21883/OS.2019.11.48517.26-19

 English version: Optics and Spectroscopy, 2019, 127:5, 860–864

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