Abstract

Chielectric spectroscopy, which is frequency-domain electric-field-induced second-harmonic generation, was developed to study the nonlinear optical response near the glass-transition temperature on short time scales. These measurements, along with time-domain second-harmonic generation and time- and frequency-domain dielectric measurements, were used to characterize the decay of poling-induced electro-optic properties of guest–host and side-chain methacrylate polymers that have glass-transition temperatures in the range 90<Tg<125 °C. Time- and frequency-dependent data were fitted with a three-level model. The temperature dependences of the time constants from the polymeric systems were then compared, and a scaling model for predicting useful lifetimes of poled electro-optic media is discussed.

© 1998 Optical Society of America

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