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Optical super-resolution through super-oscillations

By Fu Min Huang, Yifang Chen, F.Javier García de Abajo and Nikolay I. Zheludev


We demonstrate that a quasi-periodic array of nanoholes in a metal screen can focus light into subwavelength spots in the far-field without contributions from evanescent fields. The subwavelength spots were observed with a conventional optical microscope and mapped to the far-field. We relate the formation of subwavelength light localizations in the far-field to the phenomenon of super-oscillations. This effect offers a new way to achieve subwavelength imaging, which differs from approaches based on the recovery of evanescent fields

Topics: QC, TK
Year: 2007
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Provided by: e-Prints Soton

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