Orientation-controlled anisotropic diffraction gratings are realized by interferometric exposure using composite materials of nematic liquid crystals (LCs) and LC diacrylate monomers. The anisotropic diffraction properties in volume gratings, which dominantly diffract p- or s-polarized light, are shown to be controlled by the rubbed directions of the alignment layers under the control of the photopolymerization temperature. Images of the fringe patterns observed by polarization microscopy show the effects of the alignment layers on the LC orientation during grating formation.
© 2008 Optical Society of America
Diffraction and Gratings
Original Manuscript: April 1, 2008
Revised Manuscript: June 2, 2008
Manuscript Accepted: June 2, 2008
Published: June 27, 2008
Akifumi Ogiwara, Shogo Horiguchi, Hiroshi Kakiuchida, Masato Tazawa, Kazuki Yoshimura, and Hiroshi Ono, "Control of anisotropic diffraction in liquid-crystal composite volume gratings," Opt. Lett. 33, 1521-1523 (2008)