Reversible photoinduced anisotropy in a series of liquid-crystalline azobenzene side-chain polyesters is investigated as a function of intensity of the write beam and the sample temperature. Measurements reveal that the erasing takes place at a temperature much higher than the glass transition temperature. Induced anisotropy can be erased by heating the polyesters to approximately 80 °C.
© 1996 Optical Society of America
N. C. R. Holme, P. S. Ramanujam, and S. Hvilsted, "Photoinduced anisotropy measurements in liquid-crystalline azobenzene side-chain polyesters," Appl. Opt. 35, 4622-4627 (1996)