New fabrication method for anisotropic gratings formed in photocrosslinkable polymer liquid crystals |
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Authors: | Email author" target="_blank">H?OnoEmail author A?Emoto N?Kawatsuki E?Uchida M?Kuwabara |
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Institution: | (1) Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, 940-2188, Japan;(2) Department of Materials Science and Chemistry, Himeji Institute of Technology, 2167 Shosha, Himeji, 671-2201, Japan |
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Abstract: | We present a new fabrication method, called two-step ultraviolet exposure , to prepare 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. PACS 42.65.Hw; 42.70.Df; 42.70.Nq; 78.20.-e; 78.40.Me |
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