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Figure 1

From: Cavity-enhanced metallic metalens with improved Efficiency

Figure 1

(a) Schematics of part of the bilayer metalens (BLM) under circular polarized illumination with cross-polarization analysis after transmission. (b) Side section view of the unit cell of the (b) BLM and (c) conventional metalens only composed of aluminum. (d,e) SEM micrographs of the two kinds of metalens corresponding to (b,c), respectively (scale bars = 300 nm).

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