Abstract

Flat lenses can be made very thin and have the advantages of being aberration free when compared to curved surface lenses. They offer a compact design for a myriad of electro-optical applications, such as solar cell and fiber communication systems. This paper reports research into Fresnel zone plate, which is a flat lens constructed by graphene rings. Low number multilayer graphene was formed into Fresnel zone plates which utilize the reflection and transmission properties of graphene for their operation. The lenses and their performance in the visible regimes were analyzed computationally. Experimental measurements were also performed and good agreements were obtained with the modelling results. The work demonstrates the feasibility of atom thick graphene-based lenses, showing perspectives for ultra-compact integration.

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