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Direct observation and simultaneous use of linear and quadratic electro-optical effects
Journal of Physics D: Applied Physics ( IF 3.169 ) Pub Date : 2020-01-10 , DOI: 10.1088/1361-6463/ab6059
Patrick Steglich, Christian Mai, Claus Villringer and Andreas Mai

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 dev...
更新日期:2020-01-11

 

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