96. New fabrication method for anisotropic gratings formed in photocrosslinkable polymer liquid crystals, H. Ono, A. Emoto, N. Kawatsuki, E. Uchida, and M. Kuwabara, Appl. Phys. A-Materials Science & Processing, 79 (2004) 1725-1727.


We present a new fabrication method, called gtwo-step ultraviolet exposure,h to prepare the anisotropic gratings in photocrosslinkable polymer liquid crystal films. Using the controllability of the reorientation direction of mesogenic molecules, anisotropic phase gratings, in which the mesogenic molecules were periodically modulated in orthogonal directions, were prepared by the use of one grating photomask. The resultant gratings diffract the light and convert the polarization states at the same time, and have applications as diffraction optical devices.

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