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Magnifying Near-field Image Structure Based on Monolayer Graphene

The characteristics of a Terahertz magnifying near-field image fan-shaped structure are investigated in this paper. With the Fabry-Perot resonance built on monolayer graphene ribbons, the steady surface plasma resonance of electric field can help complement near-field image with high resolution. The propagation of terahertz wave on fan-shaped structure keeps the advantage of resonance field with image magnification of target by the special shape. The result shows that the minimum distance of terahertz targets can be differentiated with 0.223 µm, and the bandwidth of the structure can be operated at multi-central frequency between 0.2-10THz.