Retardation of orientation relaxation of azo-dye doped amorphous polymers upon all-optical poling

Relaxation of the all-optically induced orientation of azo-dyes in a polymer follows an unusual behaviour: it is inverted with respect to optically assisted orientation. We show that the polar orientation relaxation follows the duration of the all-optical poling process: the longer the poling, the slower the polar relaxation time.