Preparation of Bragg Holograms with Azotolane Copolymer Film.

Abstract

Random methacrylate copolymers with azotolane and tolane moieties in the side chain were synthesized. Thick copolymer films were prepared to form Bragg holograms. Upon irradiation with a linearly polarized beam at 514 nm, molecular alignment was efficiently induced, and larger birefringence was brought about.