Radially polarized symmetric Airy beam

Area of Science:

• Optics and Photonics
• Laser Physics
• Microparticle Manipulation

Background:

• Symmetric Airy beams (SAB) are known for self-acceleration properties.
• Trapping low-refractive-index microparticles typically requires specific beam structures.

Purpose of the Study:

• Introduce a new radially polarized symmetric Airy beam (RPSAB).
• Investigate the trapping capabilities and intensity of RPSAB compared to SAB.
• Explore the properties of radially polarized symmetric Airy vortex beams (RPSAVB).

Main Methods:

• Theoretical introduction of the radially polarized symmetric Airy beam (RPSAB).
• Comparative analysis of trapping efficiency and focus intensity with linearly polarized SAB.
• Presentation and analysis of on-axis and off-axis radially polarized symmetric Airy vortex beams (RPSAVB).

Main Results:

• RPSAB exhibits a hollow focus, enabling the trapping of microparticles with lower refractive indices.
• RPSAB shows nearly three times higher focus intensity than SAB.
• On-axis RPSAVB demonstrates approximately double the maximum intensity of RPSAB.
• Off-axis RPSAVB can guide vortices into self-accelerating channels with slight misalignment.

Conclusions:

• RPSAB offers enhanced capabilities for microparticle trapping and laser-based applications.
• RPSAVB provides further control and intensity enhancement for optical manipulation.
• The findings suggest potential advancements in laser cutting, metal processing, nanofocusing, and 3D particle trapping.