A Rotationally Symmetric Multifocal Pearcey Beam with a Polygonal Profile

Abstract The polygonal multifocal propagation properties and particle trapping experiments of a new kind of power‐exponential‐phase vortex chirped circular Pearcey Gaussian beam are investigated. Theoretical and experimental results show that it is possible to adjust the position and transverse spatial distribution of the beam in focal plane, as well as to make the transverse intensity distribution emerge an arbitrary polygonal profile by changing the distribution factor and vortex topological charge. Stable trapping of multiple particles is achieved in the experiment with transverse intensity fields in the polygon plane with different topological charges.