Subwavelength spinning of particles in vector cosine-Gaussian field with radial polarization
Rui Zhao (Shandong University of Technology)
Min Jiang (TU Delft - ImPhys/Optics)
Shuoshuo Zhang (Shenzhen University)
Zhongsheng Man (Shandong University of Technology, Shandong Normal University)
Benyi Wang (Shandong University of Technology)
Xiaolu Ge (Shandong University of Technology)
Wenfei Zhang (Shandong University of Technology)
Yuquan Zhang (Shenzhen University)
Shenggui Fu (Shandong University of Technology)
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Abstract
A new type of radially polarized (RP) cosine-Gaussian (CG) field is proposed. Through the analytical model, it is found that such RP CG beam exhibits completely different focusing properties from the reported RP plane waves. More importantly, a stable three-dimensional trap of Rayleigh particle accompanied by a subwavelength spin motion can be easily achieved using this RP CG beam.