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 SM ISO690:2012AKIMOVA, Elena, ABASHKIN, Vladimir, MESHALKIN, Alexei, LOSHMANSKY, Constantin, BOTNARI, Vladislav. Polarimetric Features of PEPC Polymer Doped with Photoisomerizable SY3 Azodye Chromophore. In: Surface Engineering and Applied Electrochemistry, 2023, vol. 59, pp. 791-797. ISSN 1068-3755. DOI: https://doi.org/10.3103/S1068375523060029 |
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  Surface Engineering and Applied Electrochemistry |
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| Volumul 59 / 2023 / ISSN 1068-3755 /ISSNe 1934-8002 | ||||||
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| DOI:https://doi.org/10.3103/S1068375523060029 | ||||||
| Pag. 791-797 | ||||||
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Photo-induced anisotropy measurements were carried out in thin films of azopolymers PEPC with Solvent Yellow 3, with the concentrations of 10 and 30 wt % of polymers with azo groups in their side-chain. The experimental dependences of the azimuths of the probe beam at the pump beam angles for samples were studied. The photoinduced dependence of the sample birefringence of the probe beam at the incident polarization angle of the pump beam was carried out by the polarimetric method for the studied samples. The geometric phase of anisotropic carbazole-containing azopolymers, in contrast to the dynamic phase, can be measured by the proposed polarimetric method without involving interferometry methods. This is possible because the geometric phase is not controlled by the difference in optical paths but is the result of a change of polarization inside the films due to photoinduced changes in its spatial structure. |
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| Cuvinte-cheie Azo-dye chromophore, azopolymer, Dynamic and geometric phase shift, Dynamic phase, Geometric phase, Photoinduced anisotropy, Polarimetric features, polarization holography, Probe beam, Pump beams |
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