Accurate and rapid measurement of optical vortex links and knots

Jinzhan Zhong, Shuxia Qi, Sheng Liu, Peng Li, Bingyan Wei, Xuyue Guo, Huachao Cheng, Jianlin Zhao

科研成果: 期刊稿件文章同行评审

17 引用 (Scopus)

摘要

Optical vortices can evolve in light fields, of which the singularity evolution forms dark lines with complex topological structures, knotted or linked. We propose a method to more accurately and rapidly measure the topology of optical vortex fields. To accurately locate the phase singular points, phase measurement based on digital holography and, further, a numerical search algorithm, are utilized. A motor-driven right-angle prism enables the implementation of a single exposure of hologram for each measurement along the propagation direction, greatly improving the measurement speed. The three-dimensional (3D) spatial distributions of several typical vortex links and knots are experimentally reconstructed. The proposed method is expected to rapidly observe the 3D evolution of other complicated, or even vector, fields.

源语言英语
页(从-至)3849-3852
页数4
期刊Optics Letters
44
15
DOI
出版状态已出版 - 1 8月 2019

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