Multidimensional trapping by dual-focusing cylindrical vector beams with all-silicon metalens  

作　　者：JIA-LU ZHU REN-CHAO JIN LI-LI TANG ZHENG-GAO DONG JIA-QI LI JIN WANG 

机构地区：[1]School of Physics,Southeast University,Nanjing 211189,China

出　　处：《Photonics Research》2022年第5期1162-1169,共8页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(11774053,12174052);Open Project from Key Laboratory of MEMS of the Ministry of Education;Fundamental Research Funds for the Central Universities(2242021k30012).

摘　　要：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.

关 键 词：CYLINDRICAL TRAPPING RADIAL 

分 类 号：O436[机械工程—光学工程]