%A Bi-Da Su(苏必达), Ming-Jun Wang(王明军), Yue Peng(彭月), Su-Hui Yang(杨苏辉), Hua-Yong Zhang(张华永) %T Internal and near-surface fields for a chiral sphere under arbitrary laser beam illumination %0 Journal Article %D 2019 %J Chin. Phys. B %R 10.1088/1674-1056/28/6/064210 %P 64210-064210 %V 28 %N 6 %U {https://cpb.iphy.ac.cn/CN/abstract/article_121703.shtml} %8 2019-06-05 %X

A general scheme for the investigation of scattering by a chiral sphere under arbitrary monochromatic laser beam illumination is presented. The scattered and internal fields are expanded by using appropriate spherical vector wave functions, and their expansion coefficients are determined by the boundary conditions and the projection method. Targeting multiple incidence forms such as Gaussian beam, Hermite-Gaussian beam, doughnut mode beam and zero-order Bessel beam, the influence and propagation of near-surface intensity field for a chiral sphere are analyzed. These properties are very important for studying the properties of chiral media, and for manipulating the optical tweezers and super-resolution imaging of particles.