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Controllable perfect optical vortex generated by complex amplitude encoding

Rui Yang, Xiaotong Jiang, Junjie Yu, Jing Han, Zhigang Li, Dengying Zhang, Qiang Shi, and Linwei Zhu

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Abstract

We propose a new paradigm for generating the perfect optical vortex (POV) with a controlled structure and orbital angular momentum (OAM) distribution in the focal region of a tightly focused system. The superiority of the proposed technique is demonstrated with an experiment involving the dynamic manipulation of small particles. This technique for creating the POV could open new routes to optical manipulation based on OAM.

© 2022 Optica Publishing Group

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Supplementary Material (5)

NameDescription
Supplement 1       Supplemental Document
Visualization 1       The dynamic optical trapping using perfect optical vortices with the topological charge of m = 12, 15, 18. The 30 seconds video recorded by 50 frames per second. Phase patterns loaded on the SLM changed at an interval of regular 10-second.
Visualization 2       The dynamic optical trapping of more particles using perfect optical vortex with the topological charge of m = 15. The video is recorded by the camera at 50 frames per second.
Visualization 3       The dynamic optical trapping of particles using line-shaped focal spots with the topological charge m = 5 and length l=15 um. The video is recorded by the camera at 50 frames per second.
Visualization 4       The dynamic optical trapping of particles using line-shaped focal spots with the topological charge m = 10 and length l=15 um. The video is recorded by the camera at 50 frames per second.

Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Equations (6)

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