Controlling Conical Beam Carrying Orbital Angular Momentum with Transmissive Metasurface

Figure 2

(a) Schematic of the proposed meta-atom composed of identical metallic patterns, and its (b) transmission phase and (c) transmission amplitude as functions of geometric parameters and frequencies. (d) Schematic of the proposed meta-atom composed of different metallic patterns, and its (e) transmission phase and (f) transmission amplitude as functions of geometric parameters and frequencies.

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