Aberration-Free Ultrathin Flat Lenses and Axicons at Telecom Wavelengths Based on Plasmonic Metasurfaces
Kats, Mikhail A.
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CitationAieta, Francesco, Patrice Genevet, Mikhail A. Kats, Nanfang Yu, Romain Blanchard, Zeno Gaburro, and Federico Capasso. 2012. “Aberration-Free Ultrathin Flat Lenses and Axicons at Telecom Wavelengths Based on Plasmonic Metasurfaces.” Nano Letters 12 (9): 4932–36. https://doi.org/10.1021/nl302516v.
AbstractThe concept of optical phase discontinuities is applied to the design and demonstration of aberration-free planar lenses and axicons, comprising a phased array of ultrathin subwavelength-spaced optical antennas. The lenses and axicons consist of V-shaped nano-antennas that introduce a radial distribution of phase discontinuities, thereby generating respectively spherical wavefronts and nondiffracting Bessel beams at telecom wavelengths. Simulations are also presented to show that our aberration-free designs are applicable to high-numerical aperture lenses such as flat microscope objectives.
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