Effect of molecular weight of PEG polymer matrix on the diffraction efficiency of Methyl Orange holographic media
| Autor: | Valeriia Ovdenko, N. A. Davidenko, Dmitry Vyshnevsky, Irina Davidenko, Valeriy Pavlov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
02 engineering and technology Polyethylene glycol 010402 general chemistry Diffraction efficiency 01 natural sciences Inorganic Chemistry chemistry.chemical_compound Methyl orange Electrical and Electronic Engineering Physical and Theoretical Chemistry Diffraction grating Spectroscopy chemistry.chemical_classification Thin layers Organic Chemistry Polymer 021001 nanoscience & nanotechnology Polarization (waves) Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Chemical engineering Molar mass distribution 0210 nano-technology |
| Zdroj: | Optical Materials. 111:110549 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2020.110549 |
| Popis: | Recording media for diffraction gratings formation based on polymer films of polyethylene glycol doped with the photoisomerisable azo-dye Methyl Orange have been developed. Holographic recording of the plane wave front for parallel and orthogonal orientation of polarization vectors of light beams have been performed at room temperature. In order to optimize the recording conditions and obtain high-efficient polarization holographic gratings, in the present work we study the dependence the average molecular weight of polymer matrix and solvent system for thin layers formation on the diffraction efficiency. Five PEG polymers were used as host for azo-dye incorporation −1500, 4000, 6000, 10,000 and 40,000, and two solvent systems, EtOH–H2O and THF-H2O, were examined to investigate film-forming properties. It was concluded, that structure of films as well as diffraction efficiency value and curves character strongly depend on PEG molecular weight. |
| Databáze: | OpenAIRE |
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