Elliptical Airyprime vortex beam

Abstract

We introduce a novel family of elliptical Airyprime vortex beams (EAPVBs) utilizing both numerical simulations and experiments. The EAPVB inherits the excellent self-focusing properties of the circular Airyprime vortex beam (CAPVB). Additionally, the inconsistent convergence of the long and short axes of the EAPVB causes it to focus asymmetrically. Because of the asymmetric focusing, the EAPVB has some novel properties. For example, EAPVB's high-order optical vortex split into several first-order optical vortices during propagation due to asymmetric focusing. During the splitting process, the phase singularity of the high-order vortex is destroyed, which leads to some peculiar changes in the focusing behavior of the EAPVB. What's more, the EAPVB forms two foci because of the asymmetric focusing. By varying the elliptical parameter, the first focus's intensity changes, but its position is fixed. Taking advantage of this property and the excellent self-focusing properties of the EAPVB, we construct it as a tunable optical bottle, which is used as an experimental tool for capturing particles. These findings have considerable potential for applications in optical communication and particle capture.