Self-healing properties of symmetrical power-exponent-phase vortices

The self-healing properties of symmetrical power-exponent-phase vortices (SPEPVs) are analyzed in this paper. By placing an obstacle in the optical path of SPEPVs, we simulated the propagation of the obstructed SPEPVs and verified the self-healing of the beam theoretically. We also explored the influence of external factors (e.g., obstacle size and position) and internal parameters (topological charge l and power exponent n) on the self-healing effect of obstructed SPEPVs. Furthermore, the energy flow density, similarity coefficient, effective self-healing distance, and diffraction efficiency of the obstructed SPEPVs were also discussed. The results demonstrated that the transverse energy flows around the obstructed region of SPEPVs will recover with the propagation distance increased, and the effective self-healing distance gradually increases linearly with the obstacle size rx increased. The self-healing characteristic gives the petal-like SPEPVs the ability to trap microparticles three-dimensionally. (c) 2023 Optica Publishing Group

Automated summary

This paper analyzes the self-healing properties of symmetrical power-exponent-phase vortices (SPEPVs) and verifies the self-healing of obstructed SPEPVs through simulations. The study explores the influence of external factors and internal parameters on the self-healing effect, and discusses the energy flow density, similarity coefficient, effective self-healing distance, and diffraction efficiency of obstructed SPEPVs. The results demonstrate the ability of petal-like SPEPVs to trap microparticles three-dimensionally.