Generation of cylindrical vector vortex beams by two cascaded metasurfaces
Generation of cylindrical vector vortex beams by two cascaded metasurfaces
复制标题
通过两个级联超表面生成圆柱矢量涡旋光束
DOI：
10.1364/oe.22.017207
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发表时间：
2014-07-14
期刊：
影响因子：
3.8
通讯作者：
Wen, Shuangchun
中科院分区：
文献类型：
--
作者：
Yi, Xunong;Ling, Xiaohui;Wen, Shuangchun
提出了一种简单有效的基于两个级联超颖表面的任意柱面矢量涡旋（CVV）光束的产生方法。该超颖表面作为空间变化的Panchratnam-Berry相位元件工作，并且可以产生任何期望的涡旋相位和矢量偏振。第一超表面用于切换与涡旋相关联的拓扑电荷的符号，并且第二超表面用于操纵局部极化。这种方法允许我们同时操纵CVV光束的偏振和相位。(C)2014年美国光学学会
We present a simple and efficient method to generate any cylindrical vector vortex (CVV) beams based on two cascaded metasurfaces. The metasurface works as a space-variant Panchratnam-Berry phase element and can produce any desirable vortex phase and vector polarization. The first metasurface is used to switch the sign of topological charges associated with vortex, and the second metasurface is applied to manipulate the local polarization. This method allows us to simultaneously manipulate polarization and phase of the CVV beams. (C) 2014 Optical Society of America