Azo Polymers for Optical Storage 3. Effect of Film Thickness on Net PhaseRetardation and Writing Speed

摘要

The optical writing phenomenon observed on azoaromatic containing polymer thinfilms exhibited a writing rate which was proportional to the intensity of the writing beam. This property of the mechanism for optically inducing dichroism and birefringence directly results in non-linear optical behavior in the thin film. The net phase retardation obtainable and writing rates are functions of the thin film thickness which reflect this nonlinear behavior. Azo polymers, Film thickness, Birefringence.