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Comparison of microparticle manipulating characteristics of canonical vortex beam and power-exponent-phase vortex beam
Journal of Modern Optics ( IF 1.3 ) Pub Date : 2021-02-18 , DOI: 10.1080/09500340.2021.1889060
Zhonghua Pei 1 , Sujuan Huang 1 , Yi Chen 1 , Cheng Yan 1
Affiliation  

We have experimentally studied the stable trapping and rotation of silica microspheres using canonical vortex (CV) beam and power-exponent-phase vortex (PEPV) beam. Numerical simulation was carried out to characterize the focusing property of these two types of beams. The dynamics of the microspheres in the two types of beams with various topological charges was investigated in detail. It shows that the precise control of microspheres in one direction can be realized. Furthermore, by optical trapping and moving the microspheres in the focus of the PEPV beam, it is proven that the velocity of the microspheres does not increase with the increase in the power order of the spiral phase and constant topological charge. We demonstrate the advantages and flexibility of PEPV beam for optical trapping applications. Optical manipulation technology based on PEPV beam may be used beneficially in optical tweezers and in applications for guiding microparticles.



中文翻译:

典型涡旋光束和幂指数相涡旋光束的微粒操纵特性比较

我们已经使用规范涡旋(CV)束和幂指数相涡旋(PEPV)束通过实验研究了二氧化硅微球的稳定俘获和旋转。进行了数值模拟,以表征这两种光束的聚焦特性。详细研究了两种具有不同拓扑电荷的束中微球的动力学。结果表明,可以实现一个方向上微球的精确控制。此外,通过在PEPV光束的焦点处捕获和移动微球,已证明微球的速度不会随着螺旋相和恒定拓扑电荷的幂级的增加而增加。我们展示了PEPV光束在光阱应用中的优势和灵活性。

更新日期:2021-02-19
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