Multiple quasi-perfect vector vortex beams with arbitrary 3D position on focus

We show a method for creating multiple independent quasi-perfect vector vortex beams with real-time programmable radii, topological charges, polarization orders, and position in three dimensions using a device based on a phase-only liquid-crystal-on-silicon display. We achieved the simultaneous generation of up to seven independent beams, with topological charges from -3 to 3, and found great agreement between the simulated and the measured phases and polarization structures. Additionally, we used the same scheme for enhancing the depth of focus of a single beam, resulting in a tube beam that preserves its properties during propagation. (C) 2022 Optica Publishing Group

Automated summary

This study demonstrates a method for creating multiple independent quasi-perfect vector vortex beams in real time using a phase-only liquid-crystal-on-silicon display. The researchers were able to generate up to seven independent beams with different topological charges, achieving good agreement between simulated and measured phases and polarization structures. In addition, the same scheme was used to enhance the depth of focus of a single beam, resulting in a tube beam that maintains its properties during propagation.