Low Sidelobe Super-Resolution Lens Based on Fermat Spiral-Arranged Dielectric Nano-Columns
Jiali Liao,
Jinrong Lan,
Yanling Sun
et al.
Abstract:Super-resolution lenses (SRLs) based on the principle of optical super-oscillation are composed of subwavelength structural units, which can achieve precise control of light properties through suitable design. A bio-inspired SRL structure with Fermat Spiral-arranged dielectric nano-column is proposed in this paper for the first time. Owing to the unequally spaced arrangement of the Fermat Spiral, the proposed SRL can effectively suppress the sidelobe of the focal field and achieve a high focusing efficiency. T… Show more
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