Direct observation and simultaneous use of linear and quadratic electro-optical effects

Direct observation and simultaneous use of linear and quadratic electro-optical effects
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直接观察并同时使用线性和二次电光效应

DOI:
10.1088/1361-6463/ab6059
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发表时间:
2020
期刊:
Journal of Physics D: Applied Physics
影响因子:
--
通讯作者:
Andreas
Andreas
中科院分区:
--
文献类型:
--
作者:
Steglich;Patrick;Christian;Villringer;Andreas

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我们报道了线性和二次电光效应的直接观测和同时应用,并提出了一种确定电光材料高阶磁化率的方法。该评价基于二阶和三阶磁化率的分离,实验技术采用集成光子电路技术制造的槽波导环形谐振器,该谐振器由偶氮苯染料分散红1组成的主客体聚合物体系嵌入聚甲基丙烯酸甲酯基体中作为有源电光材料。研究了在静态电场和时变电场作用下,这两种效应对光电响应的贡献。我们发现二次电光效应对整体的电光响应有显著的影响,即使是非中心分子取向的分子。我们的发现对于开发基于聚合物填充槽波导的电光器件和产生先进的光子电路具有重要意义。
We report on the direct observation and simultaneous use of the linear and quadratic electro-optical effect and propose a method by which higher-order susceptibilities of electro-optical materials can be determined. The evaluation is based on the separation of the second-and third-order susceptibilities and the experimental technique uses a slot waveguide ring resonator fabricated in integrated photonic circuit technology, which is embedded by a guest-host polymer system consisting of the azobenzene dye Disperse Red 1 in a poly (methyl methacrylate) matrix as an active electro-optical material. The contribution of both effects on the electro-optical response under the influence of static and time-varying electrical fields is investigated. We show that the quadratic electro-optical effect has a significant influence on the overall electro-optical response even with acentric molecular orientated molecules. Our findings have important implications for developing electro-optical devices based on polymer-filled slot waveguides and give rise to advanced photonic circuits.
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