Dynamic control of hybrid grafted perfect vector vortex beams.
Dynamic control of hybrid grafted perfect vector vortex beams.
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DOI：
10.1038/s41467-023-39599-8
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发表时间：
2023-07-03
影响因子：
16.6
通讯作者：
Chen, Xianzhong
中科院分区：
文献类型：
--
作者：
Ahmed, Hammad;Ansari, Muhammad Afnan;Li, Yan;Zentgraf, Thomas;Mehmood, Muhammad Qasim;Chen, Xianzhong
完美矢量涡旋光束（PVVBs）由于其独特的光学特性而引起了人们的广泛兴趣。PVVB通常通过完美涡旋光束的叠加产生，其受到有限数量的拓扑电荷（TC）的影响。此外，PVVB的动态控制是期望的，并且还没有报道。我们提出并实验证明了混合嫁接完美矢量涡旋光束（GPVVBs）和他们的动态控制。混合GPVVB是通过嫁接完美涡旋光束与多功能超表面的叠加而产生的。所产生的混合GPVVB具有空间变化率的偏振变化，由于更多的TC的参与。每个混合GPVVB在同一梁中包括不同的GPVVB，增加了更多的设计灵活性。此外，这些光束的动态控制与旋转半波片。所生成的动态GPVVB可以在动态控制具有高需求的领域中找到应用，包括光学加密、密集数据通信和多粒子操纵。利用超表面产生了一种混合嫁接的完美矢量涡旋光束，该光束可以通过半波片进行动态控制。由于更多的拓扑电荷的参与，光束具有空间变化的偏振变化率。
Perfect vector vortex beams (PVVBs) have attracted considerable interest due to their peculiar optical features. PVVBs are typically generated through the superposition of perfect vortex beams, which suffer from the limited number of topological charges (TCs). Furthermore, dynamic control of PVVBs is desirable and has not been reported. We propose and experimentally demonstrate hybrid grafted perfect vector vortex beams (GPVVBs) and their dynamic control. Hybrid GPVVBs are generated through the superposition of grafted perfect vortex beams with a multifunctional metasurface. The generated hybrid GPVVBs possess spatially variant rates of polarization change due to the involvement of more TCs. Each hybrid GPVVB includes different GPVVBs in the same beam, adding more design flexibility. Moreover, these beams are dynamically controlled with a rotating half waveplate. The generated dynamic GPVVBs may find applications in the fields where dynamic control is in high demand, including optical encryption, dense data communication, and multiple particle manipulation. A metasurface is used to generate a hybrid grafted perfect vector vortex beam, which can be dynamically controlled with a half waveplate. The beam has spatially variant rates of polarization change due to the involvement of more topological charges.
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