Abstract
We investigated the dependence of the retardation dispersion on the
polarization direction of ultraviolet (UV) light during the
photopolymerization of self-organized smectic reactive mesogen (RM)
molecules. RM retarder film that was photopolymerized with UV light
linearly polarized parallel to the layer plane showed negative dispersion
(ND) of retardation for a wide range of UV polymerization temperatures. On
the other hand, film that was photopolymerized with unpolarized UV light
showed negative dispersion in a narrow range of UV polymerization
temperatures. With a certain UV polymerization temperature, the dispersion
of retardation was converted from positive to negative, depending on the
UV polarization.
© 2018 Optical Society of Korea
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