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

  • 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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Author:Patrick Steglich, Christian Mai, Claus Villringer, Andreas Mai
Parent Title (English):Journal of Physics D: Applied Physics
Document Type:Article
Year of Publication:2020
Publishing Institution:Technische Hochschule Wildau
Release Date:2020/01/13
Source:Patrick Steglich et al 2020 J. Phys. D: Appl. Phys. 53 125106
Institutes:Fachbereich Ingenieur- und Naturwissenschaften
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Licence (German):Creative Commons - CC BY 3.0 - Namensnennung 3.0 Unported