Generation of optical vortex array along arbitrary curvilinear arrangement

LC 2012 Spatial Light Modulators
Beam Shaping / Beam Steering Digital-/ Computer Holography/ CGH
Published on:
Authors: Lin Li and Chenliang Chang and Xiangzheng Yuan and Caojin Yuan and Shaotong Feng and Shouping Nie and Jianping Ding
Abstract:

“We propose an approach for creating optical vortex array (OVA) arranged along arbitrary curvilinear path, based on the coaxial interference of two width-controllable component curves calculated by modified holographic beam shaping technique. The two component curve beams have different radial dimensions as well as phase gradients along each beam such that the number of phase singularity in the curvilinear arranged optical vortex array (CA-OVA) is freely tunable on demand. Hybrid CA-OVA that comprises of multiple OVA structures along different respective curves is also discussed and demonstrated. Furthermore, we study the conversion of CA-OVA into vector mode that comprises of polarization vortex array with varied polarization state distribution. Both simulation and experimental results prove the performance of the proposed method of generating a complex structured vortex array, which is of significance for potential applications including multiple trapping of micro-sized particles.”

Open Access

Publication: Optics Express
Issue/Year: Optics Express, Vol.26, Issue 8, pp. 9798- 9812 (2018)
DOI: 10.1364/OE.26.009798
Link: https://doi.org/10.1364/OE.26.009798

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