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A super-oscillation far-field focusing micro-lens based on continuous amplitude modulation is experimentally demonstrated with 40-nm thick width-varied sub-wavelength metallic slit array. The $228\times 200~\mu \text{m}^{\mathrm {\mathbf {2}}}$ micro-lens is designed and fabricated with numerical aperture 0.976 and focal length $40.1\lambda $ for wavelength $\lambda =632.8$ nm. Experimental...
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