光学镊子
旋涡
俘获
光学力
光学
物理
涡流
光束
梁(结构)
光功率
相(物质)
激光器
量子力学
机械
生态学
生物
作者
Ziheng Wu,Jiang Zhao,Jiantai Dou,Jun Li,Qingli Jing,Bo Li,Youyou Hu
出处
期刊:Optics Express
[The Optical Society]
日期:2022-11-07
卷期号:30 (24): 42892-42892
被引量:11
摘要
In this paper, the optical trapping of multiple particles based on a rotationally-symmetric power-exponent-phase vortex beam (RSPEPVB) was introduced and demonstrated. Based on the theories of tight focusing and optical force, the optical force model of RSPEPVB was established to analyze the optical trapping force of tightly focused RSPEPVB. Then, an experimental setup of optical tweezer, by utilizing the RSPEPVB, was built to demonstrate that the optical tweezer of RSPEPVBs can achieve the optical trapping of multiple particles, and the number of captured particles is equal to the topological charge l of RSPEPVB, which shows that the RSPEPVBs can achieve multi-particles trapping with controllable number. Moreover, compared to vortex beam, the captured particles by RSPEPVB will not rotate around the circular light intensity distribution. The results will provide a new option for optical trapping of multiple particles in biomedicine, laser cooling and so on.
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