Orientational decay in poled second-order nonlinear optical guest-host polymers: temperature dependence and effects of poling geometry

The poling of lophine-type chromophores in soluble and insoluble polyimides having different poling geometries was studied. Lopin chromophore was poled either parallel or perpendicular to the polymer film plane and the decay of poling was evaluated under several temperatures. The chromophore's poling behavior with other polymeric hosts was also examined. Results show that the poling decay times for all the systems considered in the study are strongly correlated with the glass transition temperature of the guest-host system.