Focusing of Light by a Nano-Hole Array ♣

  title={Focusing of Light by a Nano-Hole Array ♣},
  author={Fu Min Huang and Yifang Chen and F. J. Javier Garcia de Abajo and Nikolay I. Zheludev},
We demonstrate a conceptually new mechanism for sub-wavelength focusing at optical frequencies based upon the use of nano-hole quasi-periodic arrays in metal screens. Using coherent illumination at 660 nm and scanning near-field optical microscopy, ~290 nm “hot spots”, were observed at a distance of ~12.5 μm from the array. Even smaller hot-spots of about 200 nm in waist were observed closer to the plane of the array. The spatial resolution when imaging or patterning small objects with light is… CONTINUE READING
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Nanophotonics Topical Meeting, Uncasville

A. S. Schwanecke, N. Papasimakis, +4 authors I ZheludevN.
CT, USA, • 2006

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