Abstract
We present an analytical model of the influence of a polymer matrix on the electro-optical and second-order nonlinear optical response of polymer films. The interaction between the chromophores and the matrix is characterized by a local molecular field with a randomly varying orientation throughout the polymer volume. The macroscopic properties of the polymer are subsequently obtained by averaging over the fluctuating direction of the field. We consider the influence of the polymer matrix on both static and dynamic properties. In both cases, our results are valid at arbitrarily large field strengths because we avoid resorting to usual expansion techniques. The mathematically demanding ac case is treated in a variational approach, and results for the frequency dependent electro-optic response are presented. The model is found to be in qualitative agreement with the observed temperature dependence of the frequency dependent electro-optic response of a Disperse Red 1/poly(methyl methacrylate) guest/host polymer if an exponentially decreasing molecular field is assumed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
