Propagation-invariant vortex Airy beam whose singular point follows its main lobe

Masato Suzuki, Keisaku Yamane, Takashige Omatsu +1

We propose and demonstrate a novel vortex Airy beam which is a superposition of an Airy beam and its laterally sheared beam with a $\pi /2$ phase shift. This new-type of vortex Airy b…