Abstract Polyvinyl alcohol (PVA) has utilized in various fields of industry. PVA has been chosen as a host matrix and then doped with Erythrosine B dye (EB) with different concentrations of EB by using casting procedure. The linear optical properties have been studied and it found that the refractive index of PVA that contains 4 wt % of EB dye decreased by 18% with respect to that obtained for the pure sample. Also, the energy gap of PVA doped samples was studied and found three kinds of interband. The calculated nonlinear properties for pure and doped PVA samples were investigated. The calculated values of the third-order susceptibility, χ(3), and nonlinear refractive index, n2, are decreased by EB doped and the sample doped by 4 wt % of EB has the lowest value of χ(3) and n2. The obtained values of the refractive index candidate our synthesized materials to participate in light-emitting diodes and images sensor.

中文翻译：

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掺入聚乙烯醇薄膜的赤藓红B的光学线性和带隙分析

摘要 聚乙烯醇（PVA）已广泛应用于工业的各个领域。已选择 PVA 作为主体基质，然后通过浇铸程序掺杂具有不同浓度 EB 的赤藓红 B 染料 (EB)。研究了线性光学特性，发现含有 4 wt% EB 染料的 PVA 的折射率比纯样品的折射率降低了 18%。此外，研究了 PVA 掺杂样品的能隙，发现了三种带间。研究了纯和掺杂 PVA 样品的计算非线性特性。三阶磁化率 χ(3) 和非线性折射率 n2 的计算值因 EB 掺杂而降低，掺杂 4 wt% EB 的样品的 χ(3) 和 n2 值最低。