Strong tangential force within a small trapping volume under near-field Laguerre-Gaussian beam illumination.

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.

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