The possibility to regulate the texture of a liquid crystal in the smectic
A phase with the help of a photosensitive substrate was investigated. It is
shown that the light-induced realignment of the director configuration can
persist in a nematic-smectic A phase transition and cause rearrangement of
the smectic layers within the illuminated area. The ratio between the azim
uthal anchoring strengths on the photosensitive and rubbed polyimide plates
is estimated.