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Polarization-selective Bragg diffractive wavelengths in holographic structures composed of liquid crystal and polymer phases

机译:由液晶和聚合物相组成的全息结构中的偏振选择布拉格衍射波长

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Compact and easy-manufacturable wavelength selectors are desired for various types of optical equipments. Our optical wavelength selectors, which possess holographic structure consisting of liquid crystal (LC) and polymer phases, or so-called holographic polymer dispersed liquid crystals (HPDLCs), are switchable in Bragg diffraction wavelength due to polarization states. In the HPDLCs, LC submicrometer droplets are spatially periodically dispersed in polymer matrix with highly-orientational order of LC molecules in the droplets. Such structure is not difficult to be fabricated, that is, it is formed by photo-polymerization and consequent phase separation due to interferometric exposure. Furthermore, the orientation of LC is self-organized during the phase separation process.
机译:对于各种类型的光学设备,需要紧凑且易于制造的波长选择器。我们的光学波长选择器具有由液晶(LC)和聚合物相组成的全息结构,或所谓的全息聚合物分散液晶(HPDLC),由于偏振态可在布拉格衍射波长范围内切换。在HPDLC中,LC亚微米级液滴在空间上周期性地分散在聚合物基质中,液滴中的LC分子具有高度有序的顺序。这样的结构并不难于制造,也就是说,它是通过光致聚合以及由于干涉曝光而导致的相分离而形成的。此外,LC的取向在相分离过程中是自组织的。

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