作者: Baohua Jia , Xiaosong Gan , Min Gu
DOI: 10.1364/OE.16.015191
关键词:
摘要: Near-field rotation of a trapped particle under focused evanescent Laguerre-Gaussian beam illumination is theoretically investigated by mapping the two-dimensional transverse trapping efficiency exerting on particle. It revealed that severe focal field deformation associated with causes significant impact performance microparticle. Compared far-field force, strong tangential force components have been observed in mapping, which potentially lead to rotational motions within small volume optical near-field.