Holographic Formation of Diffraction Elements for Transformation of Light Beams in Liquid Crystal – Photopolymer Compositions
| Autor: | A. O. Semkin, Sergey N. Sharangovich |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Diffraction Materials science business.industry Holography Physics::Optics General Physics and Astronomy 01 natural sciences law.invention 010309 optics Optics law Liquid crystal 0103 physical sciences Light beam Diffusion (business) business Refractive index Beam (structure) Light field |
| Zdroj: | Russian Physics Journal. 60:1971-1979 |
| ISSN: | 1573-9228 1064-8887 |
| DOI: | 10.1007/s11182-018-1310-0 |
| Popis: | A theoretical model of holographic formation of diffractive optical elements for transformation of light beam field into Bessel-like fields in liquid crystal – photopolymer (LC–PPM) composite materials with a dyesensitizer is developed. Results of numerical modeling of kinetics ofvariation of the refractive index of a material in the process of formation with different relationships between the photopolymerization rates and diffusion processes are presented. Based on the results of numerical simulation, it is demonstrated that when the photopolarization process dominates, the diffractive element being formed is distorted. This leads to a change in the light field distribution at its output and consequently, to ineffective transformation of the reading beam. Thus, the necessity of optimizing of the recording conditions and of the prepolymeric composition to increase the transformation efficiency of light beam fields is demonstrated. |
| Databáze: | OpenAIRE |
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