Aita Vittorio, Zaleska Anastasiia, Putley Henry J, Zayats Anatoly V
Department of Physics and London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, U.K.
School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.
ACS Photonics. 2025 May 15;12(6):2909-2915. doi: 10.1021/acsphotonics.5c00241. eCollection 2025 Jun 18.
Plasmonic metamaterials provide a flexible platform for light manipulation and polarization management thanks to their engineered optical properties with exotic dispersion regimes. Here we exploit the enhanced spin-orbit coupling induced by the strong anisotropy of plasmonic nanorod metamaterials to control the polarization of vector vortex beams and generate complex field structures with meron topology. Modifying the degree of ellipticity of the input polarization, we show how the observed meron topology can be additionally manipulated. Flexible control of the state of polarization of vortex beams is important in optical manipulation, communications, metrology, and quantum technologies.
等离子体超材料由于其具有奇异色散特性的工程光学性质，为光操纵和偏振管理提供了一个灵活的平台。在此，我们利用等离子体纳米棒超材料的强各向异性所诱导的增强自旋 - 轨道耦合来控制矢量涡旋光束的偏振，并生成具有磁单极子拓扑结构的复杂场结构。通过改变输入偏振的椭圆率，我们展示了如何额外操纵所观察到的磁单极子拓扑结构。涡旋光束偏振态的灵活控制在光学操纵、通信、计量学和量子技术中具有重要意义。
