@article {Mendonca:581, title = {Reversible birefringence in microstructures fabricated by two-photon absorption polymerization}, journal = {J. Appl. Phys.}, volume = {103}, year = {2007}, pages = {013109-1{\textendash}013109-4}, abstract = {This paper reports the fabrication of birefringent microstructures using two- photon absorption polymerization. The birefringence is caused by a light-driven molecular orientation of azoaromatic molecules (Disperse Red 13) upon excitation with an Ar+ laser at 514.5 nm. For an azoaromatic dye content of 1\% by weight we obtain a birefringence of 5x10-5. This birefringence can be completely erased by overwriting the test spot with circularly polarized laser light or by heating the sample. Our results open the door to the development of new applications in optical data storage, wave guiding, and optical circuitry.}, url = {/files/mazur/files/rep_581.pdf}, author = {C. R. Mendonca and T. Baldacchini and P. Tayalia and Mazur, E.} }