Guo Cheng-Shan, Yue Shu-Juan, Wang Xi-Lin, Ding Jianping, Wang Hui-Tian
Department of Physics, Shandong Normal University, Jinan 250014, China.
Appl Opt. 2010 Mar 1;49(7):1069-74. doi: 10.1364/AO.49.001069.
We propose a method for realizing a polarization-selective diffractive optical element by using of a single twisted-nematic liquid-crystal display (TN-LCD). We have demonstrated that two orthogonal polarization-encoding channels can be formed using a single TN-LCD operated in some special conditions. Based on the two orthogonal encoding channels, two orthogonal polarized components of a field with any complex amplitude can be holographically encoded and reconstructed and, hence, different output images with different polarization states could be obtained, or a vector beam with spatially inhomogeneous polarization distributions, as well as the desired complex amplitude distributions, could be combined.
我们提出了一种利用单个扭曲向列型液晶显示器（TN-LCD）实现偏振选择衍射光学元件的方法。我们已经证明，在某些特殊条件下操作单个TN-LCD可以形成两个正交的偏振编码通道。基于这两个正交编码通道，可以对具有任何复振幅的场的两个正交偏振分量进行全息编码和重建，因此，可以获得具有不同偏振态的不同输出图像，或者可以组合具有空间不均匀偏振分布以及所需复振幅分布的矢量光束。
