RELAXATION PROCESSES IN POLED NONLINEAR-OPTICAL POLYMER-FILMS

Decay times, or the relaxation times after poling, of nonlinear optical host-guest systems at room temperature have been evaluated from the behavior at elevated temperatures below glass transition temperature Tg using Arrhenius plots. The factors were investigated by comparing the behaviors of the nonlinear systems to those of α and β relaxations in host polymers. The activation energies of the nonlinear systems seem to agree with those of the β relaxation processes of host polymers; however, the frequency factors were very different. The decay time of nonlinearity seemed to be affected by α relaxation processes below Tg of host polymers. © 1995 American Institute of Physics.