PDa07 高分子/液晶複合体によるホログラフィック回折格子

抄録

The resolution of a high-polymer-content liquid-crystal/liquid-crystal-polymer (LC/LCP) composite, which is effective for fabricating active birefringent optical films with a fine three-dimensional structure, was studied. By irradiating interferential fringes of ultra-violet light from an argon-ion laser, active and normally transparent holographic gratings with up to 1500 line-pairs/mm could be fabricated. The diffraction efficiency increased with the applied electric field., but the rate of change depended on the pitch of the grating and the relative directions of the grating lattice and rubbing. The limit of pitch represents the resolution of the material. The directional dependence arises from anisotropic growth of the polymer network.