Optical vortex in a quasicrystal structure

Analagous to the quasicrystal in solid physics, we reveal the properties of optical vortex (OV) in a photonic quasicrystal structure via interfering plane waves. The distribution of OVs possesses the rotational symmetry and the symmetric order agrees with the number of the plane waves. The OVs exhibit a long-range order along the radial directions. Further, the distribution and the signs of the topological charges (TCs) of OVs can be modulated via adjusting the initial phase difference between adjacent waves. In addition, the TCs are multiplied, and the orbital angular momentum and energy flow have been modulated and analyzed. This study opens up a novel, to the best of our knowledge, horizon for versatile OVs’ distribution, which will prompt several advanced applications such as multiple particle manipulation and quantum transport.