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http://dx.doi.org/10.3807/COPP.2018.2.3.286

Dependence of Retardation Dispersion on the Ultraviolet Polarization Direction During Photopolymerization of Self-organized Smectic Reactive Mesogen Molecules  

Jeong, Jinyoung (Future Semiconductor Convergence Technology Research Center, Division of Electronics Engineering, Chonbuk National University)
Choi, Yu-Jin (Department of Polymer-Nano Science and Technology, Chonbuk National University)
Jeong, Kwang-Un (Department of Polymer-Nano Science and Technology, Chonbuk National University)
Lee, Ji-Hoon (Future Semiconductor Convergence Technology Research Center, Division of Electronics Engineering, Chonbuk National University)
Publication Information
Current Optics and Photonics / v.2, no.3, 2018 , pp. 286-290 More about this Journal
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.
Keywords
Retarder; Negative dispersion; Photo-polymerization; UV polarization; Reactive mesogen;
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