Generation and control of the circle Olver beams

The circle Olver beams (COBs) generated by modulation on the basis of a new type of Olver beam are presented numerically and experimentally. The zeroth order COB is the circle Airy beam. We demonstrate auto-focusing of the COBs with both inward and outward accelerations, where the odd order COBs display auto-defocusing while the even order COBs (ECOBs) tend to focus more abruptly. We also explore the effect of the decay factor and the scaling factor on the beams' focusing properties, such as the initial energy distribution, the focusing position, the focusing intensity and the focusing depth, by using the parity mode. In addition, we verify the self-healing property of the COBs. Finally, we set up an experimental platform to implement particle capture and manipulation with the ECOBs. Our results offer practical applications for particle manipulation, laser processing, etc.

Automated summary

This article presents the generation of Circle Olver Beams (COBs) by modulating a new type of Olver beam both numerically and experimentally. The zeroth order COB is the circle Airy beam. The COBs exhibit self-focusing behavior with inward and outward accelerations, with odd order COBs displaying auto-defocusing and even order COBs focusing more sharply. The study also investigates the impact of decay factor and scaling factor on the beams' focusing properties using parity mode, and confirms the self-healing property of COBs. Practical applications such as particle manipulation and laser processing are explored using the COBs.