Abstract

Cross-linking of nonlinear optical polymers during the poling process is an interesting way to increase the thermal stability of the dipole orientation [1]. For the optimization of the poling process in cross-linking polymers, experimental techniques for the in- situ characterization of the polar order are highly desirable. Recently, Aramaki et al. [2] introduced in-situ electro-optical measurements by the ellipsometric method in order to follow the cross-linking process by optical means. They also established a direct connection between dielectric and in-situ electro-optical measurements [3]. Here we report a comprehensive study of the cross-linking process of Red Acid Magly by means of dielectric, in-situ electro-optical and pyroelectrical measurements. In addition we extend the model in [3] for the interpretation of in-situ electro-optical measurements and their connection to the dielectric properties.

© 1995 Optical Society of America