Determination of the macroscopic optical properties for the NAEC/PEK-c guest-host polymer films

The polyetherketone (PEK-c) guest-host polymer films doped with (4'-nitro)- 3-azo-9-ethyl-carbazole (NAEC) were prepared. The films were poled by coron a-onset poling at elevated temperature (COPET). The orientational order par ameter of the chromophores NAEC in poled polymer film was determined by mea suring the absorption spectra of the films before and after being poled. By using the two-level model, the measured dispersion of the refractive index of the polymer film, and the dispersion of the first hyperpolarizability o f chromophore NAEC, the dispersion of the macroscopic second-order nonlinea r optical (NLO) and linear electrooptic (EO) coefficients was evaluated for the NAEC/PEK-c guest-host polymer film. (C) 2001 Elsevier Science Ltd. All rights reserved.