New control scheme for a class of two-dimensional Airy beams in free space

We find a new class of Airy beams by combining in a distichous fashion two two-dimensional (2D) Airy beams propagating as counter-accelerating beams. To explore their unique characteristics, the distichous 2D Airy beams are constructed, their rotation factor is introduced, and the spatial distribution of their intensity when the rotation factor is a right, acute or obtuse angle, is discussed. The results show that the spatial distribution of the beams can be controlled by adjusting the rotation factor flexibly, and the intensity of the main lobe at the center of the beams can be greatly enhanced. This is of considerable significance for particle cleaning, using such beams as an "optical broom".