Planar bifocal lens based on the polarization hologram

Qi Zhang, Yuanying Zhang, Lu Huang, Jingyu Wang, Zhiyun Huang, X. Tan
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Abstract

Based on polarization holography theory, the plane bifocal vector lens is studied. In previous studies, the bifocal vector lens were limited to cross-angle π/2 and bulk materials. However, when the two waves are orthogonal circularly polarized state, the plane bifocal vector lens can be realized, and the limitation of cross-angle π/2 and bulk materials can be broken. The lens produces corresponding focus output through the reading wave with different polarization states, which can be used for large-area optical element research.
基于偏振全息图的平面双焦点透镜
基于偏振全息理论,对平面双焦点矢量透镜进行了研究。在以往的研究中,双焦点矢量透镜仅限于交叉角π/2和块状材料。然而,当两波处于正交圆偏振状态时,可以实现平面双焦点矢量透镜,并且可以打破交叉角π/2和块状材料的限制。透镜通过不同偏振状态的读波产生相应的聚焦输出,可用于大面积光学元件的研究。
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