Nersisyan Sarik R, Tabiryan Nelson V, Steeves Diane M, Kimball Brian R
BEAM Engineering for Advanced Measurements Co., 809 S. Orlando Avenue., Suite I, Winter Park, Florida 32789, USA.
Appl Opt. 2009 Jul 20;48(21):4062-7. doi: 10.1364/ao.48.004062.
We provide detailed description and characterization of specifics of the imprinting technique for fabrication of large-area and high-efficiency liquid crystal polymer polarization gratings. We show that the quality of polarization gratings imprinted with linear polarized light is as high as that of gratings obtained in the holographic process, while exhibiting twice larger diffraction angle. The cycloidal polarization pattern used for imprinting is obtained from a master polarization grating, and the importance of fine tuning of its peak diffraction wavelength to the wavelength of imprinting radiation is emphasized. Tuning of the peak diffraction wavelength of imprinted polarization gratings from UV to near IR was realized with the aid of multilayer structures. Since the imprinting process does not involve a holographic setup, it is insensitive to ambient conditions and vibrations and provides an opportunity for large scale production of polarization gratings.
我们详细描述并表征了用于制造大面积高效液晶聚合物偏振光栅的压印技术细节。我们表明，用线偏振光压印的偏振光栅质量与全息法获得的光栅质量一样高，同时衍射角大两倍。用于压印的摆线偏振图案由主偏振光栅获得，并强调了将其峰值衍射波长微调至压印辐射波长的重要性。借助多层结构实现了将压印偏振光栅的峰值衍射波长从紫外调谐到近红外。由于压印过程不涉及全息装置，它对环境条件和振动不敏感，并为偏振光栅的大规模生产提供了机会。
