The generation of three-dimensional curved beams based on holographic metasurface.

A reflective metasurface is proposed to create the three-dimensional curved beams based on holographic technique. In the design of the structure of holographic metasurface, the amplitude and phase distribution is obtained combining the generalized law of reflection and the method for producing two-dimensional Bessel beams. Furthermore, the holographic metasurface is implemented by the varying metallic square patch on the grounded dielectric substrate. The final experimental measurements confirm the theoretical analysis of fully vectorial integral equation and the full-wave simulation.