Photonics Research, 2019, 7 (9): 09001101, Published Online: Aug. 26, 2019  

Synthetic optical vortex beams from the analogous trajectory change of an artificial satellite Download: 630次

Author Affiliations
1 MOE Key Laboratory of Weak-Light Nonlinear Photonics, TEDA Applied Physics Institute and School of Physics, Nankai University, Tianjin 300457, China
2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
3 Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132, USA
4 e-mail: zgchen@nankai.edu.cn
Abstract
We propose a method to generate specially shaped high-order singular beams of pre-designed intensity distributions. Such a method does not a priori assume a phase formula, but rather relies on the “cake-cutting and assembly” approach to achieve the azimuthal phase gradient for beam shaping, inspired by the orbital motion trajectory change of an artificial satellite. Based on our method, several typical vortex beams with desired intensity patterns are experimentally generated. As an example, we realize optical trapping and transportation of microorganisms with a triangle-shaped vortex beam, demonstrating the applicability of such unconventional vortex beams in optical trapping and manipulation.

Haiping Wang, Liqin Tang, Jina Ma, Xiuyan Zheng, Daohong Song, Yi Hu, Yigang Li, Zhigang Chen. Synthetic optical vortex beams from the analogous trajectory change of an artificial satellite[J]. Photonics Research, 2019, 7(9): 09001101.

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