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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 14 — Jul. 2, 2012
  • pp: 15516–15521

Metallic nanowires can lead to wavelength-scale microlenses and microlens arrays

Soraya Zaiba, Timothe Kouriba, Omar Ziane, Olivier Stéphan, Jocelyne Bosson, Guy Vitrant, and Patrice L. Baldeck  »View Author Affiliations

Optics Express, Vol. 20, Issue 14, pp. 15516-15521 (2012)

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We theoretically and experimentally demonstrate that the diffraction of microstructures based on silver nanowires leads to very efficient microfocusing effects. Pairs of parallel nanowires act as ultrasmall cylindrical microlenses with diffraction-limited resolution in the Fresnel region. This is a new diffraction scheme to make micron-sized optical lenses with higher transmittance than plasmonic microlens based on nano-aperture arrays. Calculations based on the scalar Rayleigh-Sommerfeld integral highlights the pure scalar diffractive contribution. Thus, the plasmon contribution is negligible in such micron-sized metallic geometry. We demonstrate that two-dimensional grids of nanowires can be used to fabricate dense arrays of microlenses, i.e. 10000x10000 DPI (dots per inch).

© 2012 OSA

OCIS Codes
(220.4000) Optical design and fabrication : Microstructure fabrication
(260.1960) Physical optics : Diffraction theory
(050.1965) Diffraction and gratings : Diffractive lenses
(130.3990) Integrated optics : Micro-optical devices

ToC Category:
Optical Design and Fabrication

Original Manuscript: May 24, 2012
Revised Manuscript: June 14, 2012
Manuscript Accepted: June 16, 2012
Published: June 25, 2012

Soraya Zaiba, Timothe Kouriba, Omar Ziane, Olivier Stéphan, Jocelyne Bosson, Guy Vitrant, and Patrice L. Baldeck, "Metallic nanowires can lead to wavelength-scale microlenses and microlens arrays," Opt. Express 20, 15516-15521 (2012)

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