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Abstract
Optical anisotropy is generated in films of photochromic LCPs upon irradiation with linearly polarized light. Annealing of these films above the glass transition temperature results in a significant amplification of the photo-induced anisotropy. The amplification takes place even in the case of copolymers with only 10% of azobenzene side groups and if only 7% of the saturation value of anisotropy are induced. Photoorientation and photoinduced alignment are restricted by thermal pretreatment and ageing at room temperature.
