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Multidimensional trapping by dual-focusing cylindrical vector beams with all-silicon metalens
Photonics Research ( IF 7.6 ) Pub Date : 2022-04-08 , DOI: 10.1364/prj.449474
Jia-Lu Zhu , Ren-Chao Jin , Li Tang , Zheng-Gao Dong , Jiaqi Li , J. Wang

Dual-focusing effect with a cylindrical vector-light characteristic (i.e., radial and azimuthal polarizations) is theoretically proposed and numerically demonstrated by spin-decoupled phase control with all-silicon metalens. Attributed to the polarization dependence, the pair of focusing cylindrical vector beams can be interchanged by orthogonally switching the polarization of incident light. We demonstrate the unique contributions of focused radial and azimuthal vector beams to longitudinal and transverse optical forces on glass spheres, respectively, by calculations based on the Maxwell stress tensor. This paper presents the use of all-silicon metalens with highly-compact vector beams, promising for applications such as multidimensional optical trapping.

中文翻译:

具有全硅元透镜的双聚焦圆柱矢量光束的多维俘获

理论上提出了具有圆柱形矢量光特性(即径向和方位角偏振)的双聚焦效应,并通过全硅元透镜的自旋解耦相位控制在数值上证明了这一点。归因于偏振相关性,这对聚焦圆柱矢量光束可以通过正交切换入射光的偏振来互换。我们通过基于麦克斯韦应力张量的计算,证明了聚焦的径向和方位矢量光束分别对玻璃球上的纵向和横向光学力的独特贡献。本文介绍了具有高度紧凑矢量光束的全硅元透镜的使用,有望用于多维光学捕获等应用。
更新日期:2022-04-08
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