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Liquid-crystal micropolarimeter array for visible linear and circular polarization imaging

机译:用于可见线偏振和圆偏振成像的液晶微偏振计阵列

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In this paper, we propose a liquid-crystal mi-cropolarimeter (LCMP) array with high spatial resolution for real-time linear and circular polarization imaging in visible spectrum. LCMPs for extracting 0°, 90° linearly and right-handed circularly polarized components of incident light are implemented by micro-patterning a liquid crystal (LC) layer on top of a 45° oriented ultra-thin metal-wire-grid polarizer (MWGP). A compact LCMP pitch of 5µm×5µm is achieved with sulfonic-dye-1 (SD1) as the LC alignment material. In addition, these micron-scale LCMPs feature ~ 5µm overall thickness and ~1100 extinction ratio. Reported experimental results validate the concept of real-time linear and circular polarization image sensing and processing with targets illuminated by collimated artificial light.
机译:在本文中,我们提出了一种具有高空间分辨率的液晶微旋光计(LCMP)阵列,用于可见光谱中的实时线性和圆偏振成像。用于提取入射光的0°,90°线性和右旋圆偏振分量的LCMP是通过在45°取向的超薄金属线栅偏振器(MWGP)上方对液晶(LC)层进行微图案化来实现的)。使用磺酸染料1(SD1)作为LC取向材料,可以实现5µm×5µm的紧凑LCMP间距。此外,这些微米级的LCMP具有约5μm的总厚度和约1100的消光比。报告的实验结果验证了通过准直人造光照射目标的实时线性和圆偏振图像传感和处理的概念。

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